MongoDB changes & Mongo Command

- Fixing up MongoDB things and adding Mongo Command to start stop Mongo
from Cartero and have full control.
- Work started on Linkedin & SMS commands.
WebMailer and other fixes

- Added WebMailer Command :-)
- Fixed a few typos and small bugs on Mailer
- Added New commands to README.md
Small fix on Help message
Merge pull request #8 from FreedomCoder/master

Adding Mongo & WebMailer commands + Bug Fixes.