chore(ci): Re-enable source clear in travis (#172)

Author: mjc1283

.travis.yml

@@ -22,7 +22,6 @@ matrix:
 before_install: cd packages/optimizely-sdk
 install: npm install
 addons:
-# Disabled temporarily while we work out integration issues
-#  srcclr: true
+srcclr: true
 script: npm test
 after_success: npm run coveralls