Switched to travis-ci.com for CI builds - docs updates

CONTRIBUTING.md

@@ -61,7 +61,7 @@ To work on something, whether a new feature or a bug fix:
   corresponding changes (or additions) to the documentation and tests. This will ensure that if 
   the merged PR is reversed, all traces of the change will be reversed as well.
 
-  7. When you're done, make sure your [Travis](https://travis-ci.org/) 
+  7. When you're done, make sure your [Travis](https://travis-ci.com/) 
   Continuous Integration (CI) build is green and create a 
   [Pull Request (PR)](https://help.github.com/articles/using-pull-requests/) to submit your changes.
 

README.md

@@ -150,7 +150,7 @@ For help and general questions about BX-bot, check out the [Gitter](https://gitt
 ## Testing
 The bot has undergone basic unit testing on a _best-effort_ basis. 
 
-There is a continuous integration build running on [Travis CI](https://travis-ci.org/gazbert/bxbot).
+There is a continuous integration build running on [Travis CI](https://travis-ci.com/gazbert/bxbot).
 
 The latest stable build can always be found on the [Releases](https://github.com/gazbert/bxbot/releases) page. 
 The SNAPSHOT builds on master are active development builds, but the tests should always pass and the bot should always 

pom.xml

@@ -27,7 +27,7 @@
   </issueManagement>
   <ciManagement>
     <system>Travis CI</system>
-    <url>https://travis-ci.org/gazbert/bxbot</url>
+    <url>https://travis-ci.com/gazbert/bxbot</url>
   </ciManagement>
   <developers>
     <developer>