added g++-4.8 to travis

.travis.yml

@@ -7,6 +7,16 @@ git:
   depth: 1
 node_js:
 - '4'
+env:
+  - CXX=g++-4.8
+  global:
+    secure: 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
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8
 cache:
   directories:
   - "~/.meteor"
@@ -40,6 +50,3 @@ deploy:
 after_deploy:
 - ".travis/docker.sh"
 - ".travis/update-releases.sh"
-env:
-  global:
-    secure: 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