Merge development to master (v0.0.1)

Propose merging our current development with master.

The changes include:
  1. Sign in for users
  2. Capistrano deployment

This request also proposes version naming to keep track of releases where the syntax v.0.0.1 represents: 
  1. Major version
  2. Minor version
  3. Patch number

Note: Please remember this requires 2 ACKs, so please chime in on this thread.