Added the headerless release notes strategy.
Added the headerless release notes strategy.
Updated the release notes and the readme file with HeaderlessReleaseNotesStrategy.
Added GitHubReleaseNotesStrategy, refreshed release notes and the readme.
Added a test for the github strategy.
Simplified the readme.
Ported this plugin to use the GitHub release notes strategy.
Fixed sphinx release notes file cleaning.
Formatted release notes a bit.
Removed a max perm jvm option from the scripted configuration.
Small formatting changes.
Merge remote-tracking branch 'origin/feature/no-previous-releasenotes-file' into feature/no-previous-releasenotes-file

Conflicts:
	releaseNotesPlugin/src/main/scala/si/urbas/sbt/releasenotes/strategies/HeaderlessReleaseNotesStrategy.scala
	releaseNotesPlugin/src/main/scala/si/urbas/sbt/releasenotes/test/ReleaseNotesSelfTestPlugin.scala
	releaseNotesPlugin/src/sbt-test/blessing-produces-current-and-previous-release-notes/simple/test
	releaseNotesPlugin/src/sbt-test/headerless-release-notes/simple/project/BuildConfiguration.scala
	releaseNotesPlugin/src/sbt-test/headerless-release-notes/simple/test
Added the Sonatype snapshots repository to the plugin resolvers.
Update .travis.yml
Update RELEASE_NOTES.md
Using the previous release of the release notes plugin.
Merge pull request #3 from urbas/feature/no-previous-releasenotes-file

Feature/no previous releasenotes file