Build tweaks.

Author: tannewt

.gitignore

@@ -5,3 +5,5 @@ build_deps
 dist
 *.egg-info
 circuitpython_build_tools/data/
+.eggs
+version.py

.travis.yml

@@ -1,8 +1,8 @@
 sudo: false
 dist: trusty
-language: c
-compiler:
-  - gcc
+language: python
+python:
+    - "3.6"
 
 script:
   - python3 -m scripts.build_mpy_cross circuitpython_build_tools/data/

setup.py

@@ -3,7 +3,8 @@
 from setuptools import setup
 
 setup(name='circuitpython-travis-build-tools',
-      version='0.0.2',
+      use_scm_version=True,
+      setup_requires=["setuptools_scm"],
       description='CircuitPython library build tools for Travis CI',
       author='Scott Shawcroft',
       author_email='scott@adafruit.com',