Merge branch 'libToModules' of https://github.com/BabylonJS/Babylon.js into libToModules

.travis.yml

@@ -19,6 +19,10 @@ jobs:
   - stage: BabylonJS Build and test
     env: JOB=WhatsNewUpdate
     script: gulp tests-whatsnew
+  - env: JOB=TSCDBG
+    script:
+    - cd ../../src
+    - tsc --module amd --outFile ../.temp/amd.js --emitDeclarationOnly true
   - env: JOB=DocumentationCheck
     script: gulp typedoc-check
   - env: JOB=Styling