ci: expand Travis-CI build matrix

Change-Id: I8859a82245507b4e956b6244f5c3aea95daabdd1
diff --git a/.jenkins.d/20-tests.sh b/.jenkins.d/20-tests.sh
index 01bf070..f2ade1e 100755
--- a/.jenkins.d/20-tests.sh
+++ b/.jenkins.d/20-tests.sh
@@ -41,5 +41,8 @@
 ASAN_OPTIONS+=":strip_path_prefix=${PWD}/"
 export ASAN_OPTIONS
 
+export BOOST_TEST_COLOR_OUTPUT="yes"
+export NDN_LOG="*=DEBUG"
+
 # Run unit tests
 ./build/unit-tests $(ut_log_args)
diff --git a/.travis.yml b/.travis.yml
index f223e8c..61c1139 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,28 +3,157 @@
 env:
   global:
     - JOB_NAME=limited-build
-    - NDN_LOG=*=DEBUG
-    - BOOST_TEST_COLOR_OUTPUT=true
+    - WAF_JOBS=2
+
 matrix:
   include:
+    # Linux/gcc
     - os: linux
       dist: trusty
       env:
-        - CXX=g++
+        - CXX=g++-4.8
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources: ubuntu-toolchain-r-test
+          packages: g++-4.9
+      env:
+        - CXX=g++-4.9
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources: ubuntu-toolchain-r-test
+          packages: g++-5
+      env:
+        - CXX=g++-5
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources: ubuntu-toolchain-r-test
+          packages: g++-6
+      env:
+        - CXX=g++-6
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources: ubuntu-toolchain-r-test
+          packages: g++-7
+      env:
+        - CXX=g++-7
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+
+    # Linux/clang
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          packages: clang-3.5
+      env:
+        - CXX=clang++-3.5
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          packages: clang-3.6
+      env:
+        - CXX=clang++-3.6
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-precise-3.7
+            - ubuntu-toolchain-r-test
+          packages: clang-3.7
+      env:
+        - CXX=clang++-3.7
         - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
     - os: linux
       dist: trusty
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-precise-3.8
+            - ubuntu-toolchain-r-test
+          packages: clang-3.8
       env:
-        - CXX=clang++
+        - CXX=clang++-3.8
         - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-3.9
+            - ubuntu-toolchain-r-test
+          packages: clang-3.9
+      env:
+        - CXX=clang++-3.9
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-4.0
+            - ubuntu-toolchain-r-test
+          packages: clang-4.0
+      env:
+        - CXX=clang++-4.0
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+    - os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-5.0
+            - ubuntu-toolchain-r-test
+          packages: clang-5.0
+      env:
+        - CXX=clang++-5.0
+        - NODE_LABELS="Linux Ubuntu Ubuntu-14.04"
+        - BUILD_WITH_ASAN=yes
+
+    # macOS/clang
+    # https://docs.travis-ci.com/user/osx-ci-environment/#OS-X-Version
     - os: osx
-      osx_image: xcode8.2
+      osx_image: xcode7.3
       env:
-        - CXX=clang++
+        - NODE_LABELS="OSX OSX-10.11"
+        - BUILD_WITH_ASAN=yes
+    - os: osx
+      osx_image: xcode8.3
+      env:
         - NODE_LABELS="OSX OSX-10.12"
-notifications:
-  email:
-    on_success: always
-    on_failure: always
+        - BUILD_WITH_ASAN=yes
+    - os: osx
+      osx_image: xcode9
+      env:
+        - NODE_LABELS="OSX OSX-10.12"
+        - BUILD_WITH_ASAN=yes
+
+before_script:
+  - ${CXX:-c++} --version
+  - python --version
+
 script:
   - ./.jenkins
diff --git a/README.md b/README.md
index 5628e70..9823805 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,13 @@
 ChronoSync: synchronization library for distributed realtime applications for NDN
 =================================================================================
 
+[![Build Status](https://travis-ci.org/named-data/ChronoSync.svg?branch=master)](https://travis-ci.org/named-data/ChronoSync)
+
 In supporting many distributed applications, such as group text messaging, file sharing,
 and joint editing, a basic requirement is the efficient and robust synchronization of
 knowledge about the dataset such as text messages, changes to the shared folder, or
-document edits.  This library implements
-[ChronoSync protocol](http://named-data.net/wp-content/uploads/2014/03/chronosync-icnp2013.pdf),
+document edits.  This library implements the
+[ChronoSync protocol](https://named-data.net/wp-content/uploads/2014/03/chronosync-icnp2013.pdf),
 which exploits the features of the Named Data Networking architecture to efficiently
 synchronize the state of a dataset among a distributed group of users.  Using appropriate
 naming rules, ChronoSync summarizes the state of a dataset in a condensed cryptographic
@@ -26,7 +28,7 @@
 
 Please submit any bugs or issues to the **ChronoSync** issue tracker:
 
-* http://redmine.named-data.net/projects/chronosync
+* https://redmine.named-data.net/projects/chronosync
 
 Installation instructions
 -------------------------
@@ -35,8 +37,7 @@
 
 Required:
 
-* [ndn-cxx and its dependencies](http://named-data.net/doc/ndn-cxx/)
-* Boost libraries
+* [ndn-cxx and its dependencies](https://named-data.net/doc/ndn-cxx/)
 
 ### Build