Fix indentation, add documentation, and remove unneeded files

Change-Id: Ie40ec66c611690656ca451759f82154686ca0ec3
diff --git a/src/main/java/com/intel/jndn/mock/MockKeyChain.java b/src/main/java/com/intel/jndn/mock/MockKeyChain.java
index 87b82ec..2933c0a 100644
--- a/src/main/java/com/intel/jndn/mock/MockKeyChain.java
+++ b/src/main/java/com/intel/jndn/mock/MockKeyChain.java
@@ -23,6 +23,7 @@
 import net.named_data.jndn.security.policy.SelfVerifyPolicyManager;
 
 /**
+ * Create an in-memory key chain for use in NDN-related tests
  *
  * @author Andrew Brown <andrew.brown@intel.com>
  */