Adding Build Status (travis) button

Signed-off-by: Michael Granados <michaelgranados@gmail.com>
Adding Dependencies button

Signed-off-by: Michael Granados <michaelgranados@gmail.com>
Adding version, license and total downloads buttons

Signed-off-by: Michael Granados <michaelgranados@gmail.com>
Merge pull request #3 from dgmike/buttons

Adding information buttons on README file