ssh error while cloning docker repo example

working on week 39: Docker in my Ubuntu machine. Encountered with an ssh related error. Here are two StackOverflow links to share the similarity.

http://stackoverflow.com/questions/21255438/permission-denied-publickey-fatal-could-not-read-from-remote-repository-whil http://stackoverflow.com/questions/13509293/git-fatal-could-not-read-from-remote-repository

Though I could not find the solution yet, found one workaround .

precise command: git clone https://github.com/shekhargulati/taskman.git

please add this option to your readme file along with the original command

git clone [email protected]:shekhargulati/taskman.git