Merge pull request #231 from friederbluemle/fix-github-spelling

Fix GitHub spelling

Author: samtstern

CONTRIBUTING.md

@@ -20,7 +20,7 @@ frustration later on.
 ### Code reviews
 
 All submissions, including submissions by project members, require review. We
-use Github pull requests for this purpose.
+use GitHub pull requests for this purpose.
 
 ### The small print
 

ISSUE_TEMPLATE.md

@@ -1,7 +1,7 @@
 
 ### Step 1: Are you in the right place?
 
-  * For issues or feature requests related to the code **in this repository** file a Github issue.
+  * For issues or feature requests related to the code **in this repository** file a GitHub issue.
   * For general technical questions, post a question on [StackOverflow](http://stackoverflow.com/) tagged appropriately.
   * For general Firebase discussion, use the [firebase-talk google group](https://groups.google.com/forum/#!forum/firebase-talk)
   * For help troubleshooting your application that does not fall under one of the above categories, reach out to the [personalized Firebase support channel](https://firebase.google.com/support/contact/troubleshooting/)

README.md

@@ -97,7 +97,7 @@ To deploy FirebaseUI to Bintray
   1. Go to the Bintray dashboard and click 'Publish'.
     1. In Bintray click the 'Maven Central' tab and publish the release.
 
-### Tag a release on Github
+### Tag a release on GitHub
 
 * Ensure that all your changes are on master and that your local build is on master
 * Ensure that the correct version number is in `common/constants.gradle`