git Updates were rejected because the tip of your current branch is behind its remote counterpart. Integrate the remote changes (e.g. hint: 'git pull ...') before pushing again. code example
Example 1: git updates were rejected because the tip of your current branch is behind
git push -f origin master
Example 2: updates were rejected because the tip of your current branch is behind
# You can force push your local code status by -f
# Do this, if you are sure that your commit status in local should be reflected in remote too.
git push -f origin master