do CI against two copies of ui-router-core:

- Test against current ui-router-core/master
- Test against ui-router-core dep from package.json
- CI passes if `master` passes

Author: christopherthielen

.travis.yml

@@ -6,11 +6,30 @@ before_script:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
   - npm install -g karma
-  - npm install -g grunt-cli
+  - npm install -g typescript
   - ./nodeserver.sh > /dev/null &
 
+matrix:
+  allow_failures:
+  - env: CORE_BRANCH=
+
+env:
+  matrix:
+    # CORE_BRANCH env variable specifies the branch of ui-router-core to use during build/test
+    # Each CORE_BRANCH listed here will trigger a SEPARATE job in travis
+    - CORE_BRANCH=master
+
+    # If CORE_BRANCH is empty, it will use the ui-router-core from npm dependencies
+    # (as specified in package.json)
+    - CORE_BRANCH=
+
 script:
-  - npm run test:integrate
+  - echo "CORE_BRANCH = x${CORE_BRANCH}x";
+  - >
+    if [ "x${CORE_BRANCH}x" != "xx" ] ; then 
+      git clone --depth=10 --branch="${CORE_BRANCH}" https://github.com/ui-router/core.git ui-router-core && npm install ./ui-router-core ;
+    fi
+  - npm test
 
 sudo: false
 

package.json

@@ -1,4 +1,5 @@
 {
+
   "name": "ui-router",
   "description": "State-based routing for Javascript",
   "version": "1.0.0-beta.4",