Add yamllint for yaml and raml files

.travis.yml

@@ -5,6 +5,7 @@ install:
 
 env:
   - TOXENV=pep8
+  - TOXENV=yamllint
   - TOXENV=py27
   - TOXENV=py33
   - TOXENV=py34

tools/ramllint.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -ex
+
+workdir=$(dirname $0)
+yamllint -c $workdir/ramllint.yaml $(find . -not -path '*/\.*' -type f -name '*.raml')

tools/ramllint.yaml

@@ -0,0 +1,24 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+  comments:
+    level: error
+    require-starting-space: false
+  comments-indentation:
+    level: warning
+  document-end:
+    present: false
+  document-start:
+    level: error
+    present: false
+  empty-lines:
+    max: 1
+    max-start: 0
+    max-end: 0
+  indentation:
+    spaces: consistent
+  line-length:
+    level: warning
+    max: 120

tools/yamllint.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -ex
+
+workdir=$(dirname $0)
+yamllint -c $workdir/yamllint.yaml $(find . -not -path '*/\.*' -type f -name '*.yaml')

tools/yamllint.yaml

@@ -0,0 +1,23 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+  comments:
+    level: error
+  comments-indentation:
+    level: warning
+  document-end:
+    present: false
+  document-start:
+    level: error
+    present: false
+  empty-lines:
+    max: 1
+    max-start: 0
+    max-end: 0
+  indentation:
+    spaces: consistent
+  line-length:
+    level: warning
+    max: 120

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = py35,py34,py27,pep8
+envlist = py35,py34,py27,pep8,yamllint
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -40,6 +40,12 @@ basepython = python3.5
 [testenv:venv]
 commands = {posargs}
 
+[testenv:yamllint]
+deps = yamllint
+commands =
+    {toxinidir}/tools/yamllint.sh
+    {toxinidir}/tools/ramllint.sh
+
 [flake8]
 ignore = H703
 show-source = true