made source-map-support optional

* moved to devDependencies
* inits with a try/catch

also updated grunt-webshot
properly names --services option
attacking npm install problem

https://github.com/DefinitelyTyped/tsd/issues/57

after stackoverflow the problem seems to be windows newlines in the CLI, either TSD or the forked update-notifier.

added cleaning-up of build to prepublish
* added grunt-regex-replace
* remove //# sourceMapUrl from api.js, normalise EOL in cli.js
* normalise EOL in cli.js
* removing api.js.map

made source-map-support optional
* moved to devDependencies
* added try-catch

updated grunt-webshot
moving to 0.5.3