Allow canary and beta to fail builds

Author: samselikoff

.travis.yml

@@ -69,3 +69,7 @@ jobs:
       if: (branch = master OR tag IS present) AND type = push
       env: NAME=deploy
       script: node_modules/.bin/ember deploy production
+
+  allow_failures:
+    - env: EMBER_TRY_SCENARIO=ember-beta
+    - env: EMBER_TRY_SCENARIO=ember-canary