Edit READMEs without opening corresponding project as a whole inside atom

[mbad0la]

To use the package for modifying your READMEs, you need to open the whole project inside atom. This is because the package identifies the active projects inside atom and gets corresponding git repository from it.
On opening just the README of the project, atom API doesn't have access to the repository data(in the current implementation) and hence the bug. We need a workaround that.