implement get parents method
Merge remote-tracking branch 'origin/master'

Conflicts:
	server/src/jetbrains/teamcilty/github/api/impl/GitHubApiImpl.java
IDEA updated
move GitHub API url processing away
code cleanup
trim slashes on GH url
better wording for feature settings,
add a note regarding GitHub API URL for GitHub Enterprise,
closes #15
Update README.md
Update README.md
disable ssl certificate check for GitHub api by default. Closes #19
Add option to add comments to pull requests

* add comment for every build stage to github pull request