make entry access simpler [#4]

Installing git on host machine is necessary for users to use git-bash.
But github account should not be mandatory.

It's mandatory to teraciers, but not to everyone. This will make the entry access simpler.
make entry access simpler [#4]

Format README, the line lenght must not exceed 100 characters, no tab chracters are allowed
make entry access simpler [#4]

Download zip if git is not available
make entry access simpler [#4]

*unix -> *nix
Merge remote-tracking branch 'hoatle/enhance_4_simpler_entry_access' into develop