Removed ambiguous rules

e.g k+a+i should result କାଇ instead of କୈ.
n+T should result ନଟ instead of ଣ୍ଟ
n+D should result ନଡ instead of ଣ୍ଡ
added test case for ai

added test case
Fix the path to qunit.js and qunit.css

The submodule no longer provides qunit.js or qunit.css
So, directly accessing from the CDN
Remove prefixed border-radius rules
Merge pull request #340 from Nikerabbit/cssfix

Remove prefixed border-radius rules
Merge pull request #339 from kartikm/qunit-path-fix

Fix the path to qunit.js and qunit.css
Merge pull request #315 from psubhashish/patch-8

Removed ambiguous rules
Merge pull request #333 from psubhashish/patch-10

Added test case for ai