improvement: give feedback when an issue is created

resolves #13

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add feedback to creating issues on github

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add feedback to creating issues on bitbucket

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge pull request #19 from gittalk/feedback-git-issue-add

Thanks @arlimus