Make compatible with python 3 (#281)

* Make compatible with python 3

* Update travis

* Env

* Fix typo

* Fix install correct platformio

* Lint

* Fix build flags

* Lint

* Upgrade pylint

* Lint

.travis.yml

@@ -1,20 +1,30 @@
 sudo: false
 language: python
-python:
-  - "2.7"
-jobs:
+
+matrix:
+  fast_finish: true
   include:
-    - name: "Lint"
-      install:
-        - pip install -r requirements.txt
-        - pip install flake8==3.5.0 pylint==1.9.3 tzlocal pillow
+    - python: "2.7"
+      env: TARGET=Lint2.7
+      install: pip install -e . && pip install flake8==3.6.0 pylint==1.9.4 tzlocal pillow
       script:
         - flake8 esphomeyaml
         - pylint esphomeyaml
-    - name: "Test"
-      install:
-        - pip install -e .
-        - pip install tzlocal pillow
+    - python: "3.5.3"
+      env: TARGET=Lint3.5
+      install: pip install -U https://github.com/platformio/platformio-core/archive/develop.zip && pip install -e . && pip install flake8==3.6.0 pylint==2.2.2 tzlocal pillow
+      script:
+        - flake8 esphomeyaml
+        - pylint esphomeyaml
+    - python: "2.7"
+      env: TARGET=Test2.7
+      install: pip install -e . && pip install flake8==3.6.0 pylint==1.9.4 tzlocal pillow
+      script:
+        - esphomeyaml tests/test1.yaml compile
+        - esphomeyaml tests/test2.yaml compile
+    - python: "3.5.3"
+      env: TARGET=Test3.5
+      install: pip install -U https://github.com/platformio/platformio-core/archive/develop.zip && pip install -e . && pip install flake8==3.6.0 pylint==2.2.2 tzlocal pillow
       script:
         - esphomeyaml tests/test1.yaml compile
         - esphomeyaml tests/test2.yaml compile