Update README for v2.6

make deploys better

add some more error messages for ssh identity. fix bug with user.Curr…

…ent on linux

update readme for v2.2

Update the usage in the readme

retry using all available auth methods. fix error with git ssh wrapper.

Add some better error messages.

Update readme for latest version.

Update readme for new version.

Handle pushing HEAD if it does not match a branch. Creates a remote b…

…ranch called `happended` to the refernced HEAD.