Package uploaded to NPM should not include .git directory

[rcook]

This causes future npm install commands to fail as follows:

npm ERR! code EISGIT
npm ERR! path /Users/name/src/electron-typescript-app/node_modules/electron-cgi
npm ERR! git /Users/name/src/electron-typescript-app/node_modules/electron-cgi: Appears to be a git repo or submodule.
npm ERR! git     /Users/name/src/electron-typescript-app/node_modules/electron-cgi
npm ERR! git Refusing to remove it. Update manually,
npm ERR! git or move it out of the way first.

This also interferes with the use of git clean and other git commands in the referencing project.

[ruidfigueiredo]

Hey @rcook

Thanks for letting me know. Seems like I my last publish was affected by this npm issue.

I've just published version 1.0.5.

Guess from now on I'll do a --dry-run first.