added property 'git.commit.id.short-describe' that strips out commit hash from 'git.commit.id.describe'
Update README.md
Merge pull request #111 from szymex/master

Added property 'git.commit.id.short-describe'
Changed: short-describe to describe-short
Refs #111
Fix for https://github.com/ktoso/maven-git-commit-id-plugin/issues/116 added abbrevLength to Readme and pom example config
Fixed PR about abbrevLength - it was available since 2.0.4, not 1.9
Added Parameters for Junit-Test (will test with native git and jgit implementation)
Added some tests which modify the abbrev length of the git.discribe to identify problems with the native git thingy
Added some tests which modify the abbrev length of the property git.commit.id.abbrev to identify problems with the native git thingy
When we feed the gitDescribeConfig with a abbrev length of 10 we except such as well
Added some integration-tests for native git config tests
Added a new layer for git-Runtime (native VS jgit)
Merge remote-tracking branch 'origin/master' into native

Conflicts:
	src/test/java/pl/project13/maven/git/GitCommitIdMojoIntegrationTest.java
Improved the new Git-Dataprovider-Interface which now will handle the filling of the main git properties
Added some defualt config the the example pom as well
cherry-pick https://github.com/ktoso/maven-git-commit-id-plugin/commit/1a113c0405c196da3788643800d9994f65c5bc15 :)
Enable tests for native git, now we have Tests run: 89, Failures: 7, Errors: 1, Skipped: 0
The NativeGitProvider now extends the GitDataProvider as well; we still got 6 Test failures
Added GitDescribe in the native git. Not sure if we have a Code Injection here @ see NativeGitProvider:LN144
Sorry this was not supposed to go in the previos commit :(