Merge pull request #4 from Jay-Krish/master

added class engine for backend and class analyzer for frontend component...
Created both class analyzer and class engine
DatabaseUtils.prop file added
Intelligent model builder completed:
Some changes made to Engine
completed predictions with analyzer and model building with engine
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Use case one is done, com.arima.classengine.engine.Aanalyzer.java has the API updateModel(int year, int grade, int term, String subject)
added getModel(int year, int grade, int term, String subject) to Engine API
Added association rule mining feature
ignore target
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web module client for analyzer
git ignnore target,bin