adding travis pre-commit validation. resolves #7

.pre-commit-config.yaml

@@ -0,0 +1,16 @@
+repo: https://github.com/kintoandar/pre-commit.git
+    sha: v2.1.0
+    hooks:
+    -   id: terraform_fmt
+    -   id: terraform_validate
+
+-   repo: git://github.com/pre-commit/pre-commit-hooks
+    sha: v1.2.3
+    hooks:
+    -   id: check-added-large-files
+    -   id: check-case-conflict
+    -   id: check-json
+    -   id: check-merge-conflict
+    -   id: check-yaml
+    -   id: detect-private-key
+    -   id: trailing-whitespace

.travis.yml

@@ -0,0 +1,15 @@
+sudo: required
+language: python
+
+python:
+  - "3.6"
+
+before_install:
+  - sudo apt-get update -yqq
+
+install:
+  - pip install pre-commit
+  - pre-commit install
+
+script:
+  - pre-commit run --all-files --verbose