Don't warn about directories
Extract method
Change this back to write on the same line
Rename to match
Add some variation such as msbuild parameters to test data
Test passing ms build parameters
Do some really simple parsing and hope people don't try using commas and equals signs inside their properties.
R# Extract method/class
Downgrade this from a warning - we don't expect to convert every reference
Use FileInfo in Paths class
Run a single, trivial end-to-end test just to make sure the whole thing doesn't blow up
Check a the simple project returns sane property values without throwing exceptions