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
Merge remote-tracking branch 'origin/master' into native

Conflicts:
	src/test/java/pl/project13/maven/git/GitCommitIdMojoIntegrationTest.java