refactor(build): move all build requirements into dev-requirements.txt

Author: jschaf

dev-requirements.txt

@@ -1,6 +1,8 @@
+coverage==3.7.1
+coveralls==0.5
 logilab-common==0.63.2
-pylint==1.4.3
 Flask==0.10.1
 Flask-WTF==0.11
 Flask-Bcrypt==0.6.2
 Flask-Admin==1.2.0
+pylint==1.4.3

scripts/travis-install.sh

@@ -1,5 +1,3 @@
 #!/bin/bash
-pip install coverage coveralls
 pip install -r dev-requirements.txt
-pip install git+https://github.com/landscapeio/pylint-plugin-utils.git@develop
 pip install --editable .