Added testing and travis needed changes

.travis.yml

@@ -3,12 +3,15 @@ cache:
   directories:
       - "$HOME/.cache"
       - "$HOME/.ccache"
+env:
+  - PYTHON_VERSION=2.7
+  - PYTHON_VERSION=3.5
 before_install:
     - ccache -s
     - export PATH=/usr/lib/ccache:${PATH}
     - wget https://package-data.enthought.com/edm/rh5_x86_64/1.4/edm_1.4.1_linux_x86_64.sh && bash ./edm_1.4.1_linux_x86_64.sh -b -p $HOME
     - export PATH=${HOME}/edm/bin:${PATH}
-    - edm environments create --version 3.5 force 
+    - edm environments create --version ${PYTHON_VERSION} force 
     - . $HOME/.edm/envs/force/bin/activate 
     - cat requirements/edm_requirements.txt | grep -v "^#" | while read line; do edm install -y `echo $line | awk '{print $1"=="$2}'`; done 
 install:
@@ -17,3 +20,9 @@ install:
 script:
     - pip install -r requirements/dev_requirements.txt
     - flake8 .
+    - python -m unittest discover
+after_success:
+    - coverage run -m unittest discover
+    - pip install codecov
+    - codecov
+    - bash <(curl -s https://codecov.io/bash)

requirements/dev_requirements.txt

 flake8
+coverage