Update travis to support build.js

.travis.yml

@@ -8,6 +8,11 @@ deploy:
     secure: qTksJDsQtgnDiEoVdT6AMEIaZ5kxAE+2A2KJvL/8AlZQ2db0ZOo+yAX2EHukK2dEH82wlr3cLabcwKGz+QK7EoZzMJ+b6G+/RRzl1jGbPDza5Jyuq9Iae9BCLWKgOxSJiFF4GdQbNex+FpN/sbQEGcoMwQ3AIbaHbvWhccMgsUXEXaQz4OFtBar0roxC64gSfE0ecapdbW7mDcSNhrUgpujXhd+kuaaBu91Mc6EDXMgf3tCoDFI/Dno+4T7S4rZHqX3Y+PCDNXPIQzSAA7rOX41pM14+3s+g6/78KIxhgP03pkCY1EEN/RqhAXr7obAH4KdCOvuMKkWdRJkd/G0bgTDUz/VwVN0SK9tqN36LcPYGty9p2Af0hSbpaTVpcb4gzsZXq//8FPedvnhuocCuMP+FfiIl9lyEq0cXXa35Z3fS+bDDX4R0XMu2baejxh80pLl4VbQfS1XAUuMnckRWywm6ucUYv8lOnih1r4yDFk396eGY9Qahu9xIFfzKwk/r8Hcu8TiLTwE7EWzXlM2fy4fCn+s21ziNkdfNpNAHRmm1MFnasleNCdbeLOCuaYksb6AOK4XDF1MhN3665s+7VM0uMP0NkgTdX20U6oCHPLmMmdHBpWAMUxPO184KdEKqefRlLHkJGAySdT6Uw/3gS+1oaXMEPgKMlEsPMky2ePo=
   on:
     repo: fable-compiler/fable-arch
+env:
+  - TRAVIS_NODE_VERSION="7"
+install:
+  - rm -rf ~/.nvm && git clone https://github.com/creationix/nvm.git ~/.nvm && (cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`) && source ~/.nvm/nvm.sh && nvm install $TRAVIS_NODE_VERSION
 before_script:
-- npm install -g npm@'>=3'
-script: ./build.sh
+  - npm install -g npm@'>=3'
+  - npm install
+script: node build.js