Revert "Thiru |#735| Modified travis.yml to execute jar file"

This reverts commit 74e713feb308aa556cbafaaa4125b3e6b7aca74a.
Revert "Thiru |#735| Added manifest file to jar"

This reverts commit ee287504d06f5bf899bb7d7176304620a3a59ed0.
Thiru & Kumaran | #735 | Modified build.gradle to add Main Class to the manifest.