try to fix codespell...

.travis.yml

@@ -1,20 +1,17 @@
 language: ruby
 
-before_install:
-  - sudo apt-get -y install python3
-
 matrix:
   fast_finish: true
   include:
-    - rvm: 2.2
-      env:
-      - TASK='awesome_bot'
-    - env:
-      - TASK='codespell'
-
+    - language: ruby
+      rvm: 2.2
       before_script:
-  - if [ "$TASK" = "awesome_bot" ]; then gem install awesome_bot; fi
-  - if [ "$TASK" = "codespell" ]; then pip install --user git+https://github.com/codespell-project/codespell.git; fi
+        - pip install git+https://github.com/codespell-project/codespell.git
       script:
-  - if [ "$TASK" = "awesome_bot" ]; then awesome_bot README.md --allow-dupe --white-list creativecommons,awesome-mqtt.svg,wiki.videolan.org,homegear.eu,cloud.emqx.io,www.busch-jaeger.de; fi
-  - if [ "$TASK" = "codespell" ]; then codespell --check-filenames --check-hidden --quiet 2 --regex "[a-zA-Z0-9][\\-'a-zA-Z0-9]+[a-zA-Z0-9]" $(eval "find ./ -type f | xargs"); fi
+        - codespell --check-filenames --check-hidden --quiet 2 --regex "[a-zA-Z0-9][\\-'a-zA-Z0-9]+[a-zA-Z0-9]" $(eval "find ./ -type f | xargs")
+    - language: python
+      python: 3.5
+      before_script:
+        - pip install git+https://github.com/codespell-project/codespell.git
+      script:
+        - awesome_bot README.md --allow-dupe --white-list creativecommons,awesome-mqtt.svg,wiki.videolan.org,homegear.eu,cloud.emqx.io,www.busch-jaeger.de