Typos corrected, a blank line added

Also added an ignore to PyCharm
Well the issue is that it got ignored and went red again ;) I think a better approach would be to do as discussed here (https://github.com/astropy/astropy/pull/1165) and have a 'lite' PEP8 checker on Travis for a few common things that are easily fixed, and over time we can consider making it more aggressive.