Update README.md

fixed image URL
Update README.md

fixed jenkins URL too ...
Merge remote-tracking branch 'aayvazyan-tgm/master'
Merge branch 'master' of github.com:jklepp-tgm/dLock
Merge remote-tracking branch 'aayvazyan-tgm/master'

Conflicts:
	README.md
fixed dependencies from and to GotLock
fixed unit test, Test_DLockClient_lockWhile, no longer running forever
added JaCoCo coverage plugin to gradle build
made gradlew executable
updated gradle wrapper
fixed javadoc comments
added opening p tag to javadoc
build.gradle versioning based on git
configure maven-publish plugin
gotLock() should not acquire a new lock.
Merge pull request #1 from jklepp-tgm/master