Remove obsolete Travis CI config

Also restore .mailmap, erroneously deleted in
commit bed854c1daeb7408f861ec49fc3fb30770e1c49a

Change-Id: I086f83a46d5074024258d246b29dc232a79c74de
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..be9b8e2
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,5 @@
+Zhiyi Zhang <zhiyi@cs.ucla.edu> <zhiyi.zhang@ucla.edu>
+<davidepesa@gmail.com> <davide.pesavento@lip6.fr>
+Alexander Afanasyev <aa@cs.fiu.edu> <aa@cs.ucla.edu>
+Alexander Afanasyev <aa@cs.fiu.edu> <alexander.afanasyev@ucla.edu>
+Md Ashiqur Rahman <marahman@email.arizona.edu>
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 8ff6d27..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,105 +0,0 @@
-version: ~> 1.0
-language: cpp
-os: linux
-dist: bionic
-
-arch:
-  - amd64
-  - arm64
-  - ppc64le
-  - s390x
-
-env:
-  - COMPILER=g++-7
-  - COMPILER=g++-9
-  - COMPILER=clang++-6.0
-  - COMPILER=clang++-9
-
-jobs:
-  include:
-    # Linux
-    - env: COMPILER=g++-8
-    - env: COMPILER=clang++-5.0
-    - env: COMPILER=clang++-7
-    - env: COMPILER=clang++-8
-    - env: COMPILER=clang++-10
-    - env: COMPILER=clang++-11
-    - env: COMPILER=clang++-12
-
-    # macOS
-    - os: osx
-      osx_image: xcode9.4
-      env: # default compiler
-    - os: osx
-      osx_image: xcode10.1
-      env: # default compiler
-    - os: osx
-      osx_image: xcode10.3
-      env: # default compiler
-    - os: osx
-      osx_image: xcode11.3
-      env: # default compiler
-    - os: osx
-      osx_image: xcode11.6
-      env: # default compiler
-    - os: osx
-      osx_image: xcode12
-      env: # default compiler
-
-  allow_failures:
-    - env: COMPILER=clang++-12
-
-  fast_finish: true
-
-before_install:
-  - |
-    : Adding apt repositories
-    case ${COMPILER} in
-      g++-9)
-        # https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test/+packages
-        travis_retry sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
-        travis_retry sudo apt-get -qq update
-        ;;
-      clang++-1?)
-        # https://apt.llvm.org/
-        LLVM_REPO=${COMPILER/clang++/llvm-toolchain-${TRAVIS_DIST}}
-        travis_retry wget -nv -O - "https://apt.llvm.org/llvm-snapshot.gpg.key" | sudo apt-key add -
-        travis_retry sudo add-apt-repository -y "deb http://apt.llvm.org/${TRAVIS_DIST}/ ${LLVM_REPO%-12} main"
-        travis_retry sudo apt-get -qq update
-        ;;
-    esac
-
-install:
-  - |
-    : Installing C++ compiler
-    if [[ -n ${COMPILER} ]]; then
-      travis_retry sudo apt-get -qy install ${COMPILER/clang++/clang}
-    fi
-
-before_script:
-  - |
-    : Setting environment variables
-    if [[ -n ${COMPILER} ]]; then
-      export CXX=${COMPILER}
-    fi
-    case ${TRAVIS_OS_NAME} in
-      linux)  export NODE_LABELS="Linux Ubuntu Ubuntu-18.04" ;;
-      osx)    export NODE_LABELS="OSX OSX-$(sw_vers -productVersion | cut -d . -f -2)" ;;
-    esac
-    export WAF_JOBS=2
-  - |
-    : Enabling workarounds
-    case "${TRAVIS_CPU_ARCH},${COMPILER}" in
-      ppc64le,g++-7)
-        # AddressSanitizer does not seem to be working
-        export DISABLE_ASAN=yes
-        ;;
-      *,clang++-8)
-        # https://bugs.llvm.org/show_bug.cgi?id=40808
-        export DISABLE_ASAN=yes
-        ;;
-    esac
-  - ${CXX:-c++} --version
-
-script:
-  - ./.jenkins
diff --git a/AUTHORS.md b/AUTHORS.md
index 0c40c8d..72c3674 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -12,7 +12,7 @@
 * Md Ashiqur Rahman <https://ashiqrahman.com>
 * Junxiao Shi <https://cs.arizona.edu/~shijunxiao>
 * Yufeng Zhang <https://yufengzh.io>
-* ***(Maintainer)*** Zhiyi Zhang <https://zhiyi-zhang.com>
+* Zhiyi Zhang <https://zhiyi-zhang.com>
 
 # Technical Advisors
 
diff --git a/README.md b/README.md
index 4d63c94..1bcc54d 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 # NDN Certificate Management Protocol (NDNCERT)
 
-![Language](https://img.shields.io/badge/C%2B%2B-14-blue.svg)
-[![Build Status](https://travis-ci.org/Zhiyi-Zhang/ndncert.svg?branch=v0.3)](https://travis-ci.org/Zhiyi-Zhang/ndncert)
-![build_v03](https://github.com/Zhiyi-Zhang/ndncert/workflows/build_v03/badge.svg)
+![build_v03](https://github.com/named-data/ndncert/workflows/build_v03/badge.svg)
+![Language](https://img.shields.io/badge/C%2B%2B-14-blue)
 
 The NDN certificate management protocol (**NDNCERT**) enables automatic certificate management
 in NDN. In Named Data Networking (NDN), every entity should have a corresponding identity