added some methods to delete field, delete docs, update docs, delete docs using queries and other minor changes
improved teh deleteDoc method to receive a list of doc ids to delete
added some documentation for deleteDoc and deleteDocByQuery
updated the documentation
updated documentation
updated the documentation
Merge remote-tracking branch 'remotes/hguillermo/master' into develop

Conflicts:
	lib/client.js

Merging for issue #3 and bumping the version to 0.0.4