Refactored checkout of a new branch into gitHelper.createBranch, also added a deleteBranch method
Added delete of temp release branch step
Added tests for deleting of temp release branch
Added finish_sg_release subtask
Moved gitCommit to gitHelper.commit
Refactored version._getVersion function
Fixing version module to set version number when it is provided through command line
Added commit new version into develop branch step
Fixed arguments passed to gitHelper.commit
Uses developVersionCommitMsg from messages module
Added test for committing into develop branch
Added gitHelper.push method