Remove node 4 from the travis builds as per #66

Author: Braden Rogness

.travis.yml

@@ -21,10 +21,6 @@ script:
 
 matrix:
   include:
-    - os: linux
-      node_js: 4
-      sudo: false
-      env: CC='clang-4.0' CXX='clang++-4.0'
     - os: linux
       node_js: 6
       sudo: false
@@ -37,9 +33,6 @@ matrix:
       node_js: 10
       sudo: false
       env: CC='clang-4.0' CXX='clang++-4.0'
-    - os: osx
-      osx_image: xcode8.2
-      node_js: 4
     - os: osx
       osx_image: xcode8.2
       node_js: 6