Merge pull request #1 from Jay-Krish/master

adding class db schema, sql
Merge pull request #2 from Jay-Krish/master

added central db design for CLASS
Merge pull request #3 from Jay-Krish/master

small change in table order
Created Engine and Frontend and Jar
Merge branch 'master' of https://github.com/rraju1990/CLASS
added as plugin
added as plugin verison 1.1.1
added as plugin verison 1.1.1
added working plugin API verison 1.1.1
added jar as product
added class engine for backend and class analyzer for frontend components