Merge pull request #131 from lasanthafdo/master

Adding OSGi dependencies of spark orbit at ML feature level
model service changes
roc curve is added
Merge branch 'master' of https://github.com/upul/product-ml
model service update
Merge remote-tracking branch 'upstream/master'
Merge pull request #133 from lochana/master

model service changes
bug fixed
Merge pull request #134 from SupunS/master

Bug fixed and Restructured
model update Dec 17 2014
Merge remote-tracking branch 'upstream/master'
modified exporting/hiding packages
modified exporting/hiding packages
Merge pull request #135 from SupunS/master

Modified exporting/hiding packages
model update
Merge remote-tracking branch 'upstream/master'
error handling is added
Merge remote-tracking branch 'upstream/master'
fixed some issues
add more error checking