Add CI job to lint python script

.circleci/config.yml

@@ -0,0 +1,14 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/python:3.6
+    working_directory: ~/tex-template
+    steps:
+      - checkout
+      - run:
+        name: Install Dependencies
+        command: sudo pip install flake8
+      - run:
+        name: Lint
+        command: flake8 build.py --ignore=E128,E501