Broken/Unreachable links in Readme.md

[vashisthrahul13]

Readme.md has many broken/unreachable links .
This impacts the readability of the document.

Example of broken links:

http://cooltiming.com/SV/logo.png
http://cooltiming.com/SV/features.png
http://cooltiming.com/SV/Layout-Anim3.gif
http://cooltiming.com/SV/demo_wide.png
http://cooltiming.com/SV/pairwise.png
http://cooltiming.com/SV/pairwise.png
http://cooltiming.com/SV/associations_detail.PNG