Failed commit – Can't encode character
### How did it happen?
1. trying to commit (with or without pretty diffs)
### Error log

**Failed..**

```
Traceback (most recent call last):
  File "/Users/ricucit/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/getArtboardNames.py", line 13, in <module>
    print artboard["name"]
UnicodeEncodeError: 'ascii' codec can't encode character u' #\u2265' in position 16: ordinal not in range(128)
```
