Edit travis configuration

.travis.yml

@@ -5,25 +5,25 @@ matrix:
   include:
     - os: linux
       addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-4.9
+      apt:
+        sources:
+          - ubuntu-toolchain-r-test
+        packages:
+          - g++-4.9
       env:
-         - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
-  
-  # OS X / GCC 
-  include:
-     - os: osx
-       osx_image: xcode8
-       env:
         - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
 
+  # OS X / GCC
+  include:
+    - os: osx
+      osx_image: xcode8
+      env:
+       - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
+
   # Linux / Clang
   include:
-     - os: linux
-       addons:
+    - os: linux
+      addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
@@ -32,14 +32,14 @@ matrix:
             - clang-3.6
       env:
         - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6"
-    
-    # OS X / Clang
-    include:
-      - os: osx
-        osx_image: xcode8
+
+  # OS X / Clang
+  include:
+    - os: osx
+      osx_image: xcode8
 
 before_install:
-    - eval "${MATRIX_EVAL}"
+  - eval "${MATRIX_EVAL}"
 branches:
   only:
     - master