fixed some issues
add more error checking
Add licence header to pom.xml. Fixed missing msg in the exception
File format validation added
File format validation added
Merge pull request #136 from lochana/master

model update
Merge pull request #137 from SupunS/master

Add licence header to pom.xml. Fixed missing msg in the activator's exception
wso2 graph js is updated according to last review comments
Merge remote-tracking branch 'upstream/master'
ROC decimal format