implemented first PoC
widened triming of versions read from files to whitespaces
added version command
implemented a default command showing the current bumped version
finalized bumping of major versions
added commands to bump minor and patch versions
added missing build depdendencies
changed project path variable inside Makefile
refactored dedepency installation to use global go get installation
refactored bump code of major, minor and patch command to a util function with callback
switched parameter order of VersionStorage.WriteVersionFile()
added error to commands again
refactored code to not use a factory object and a function instead
added useful information to README
added juju/errgo error wrapping to the project
added missing error wrappers
changed wording of main command's output.
added command to init a version file
added documentation for the init sub command
added license file