Improve Documentation

[amarjeetkapoor1]

Improve Documentation of this project.

• Add Doc to explaining the work flow of this project.
• Add comments explaining the codes.
• Add Doc to tell the objective of this project and make TODO list.
• Make list of BUGS and fixes needed in code.

Plus some other points that I missed.

[singh1114]

Documentation error:
Can't make it work on ubuntu 16.04.
While running install.sh, it says no installation candidate for php5.

[amarjeetkapoor1]

Thats why this issue and #6 issue is there.

[singh1114]

PR submitted.