FIX: add git ignore

Author: mnoergaard

.gitignore

@@ -0,0 +1,31 @@
+# Python cache and bytecode files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Coverage reports
+.coverage
+.coverage.*
+htmlcov/
+coverage.xml
+
+# Build directories
+build/
+dist/
+.eggs/
+*.egg-info/
+*.egg
+# docs build
+/docs/_build/
+
+# Editor and OS artifacts
+.DS_Store
+*.swp
+*~
+.vscode/
+.idea/
+.env
+.envrc
+
+# Additional
+.ipynb_checkpoints/