Fix newline issue in README

Author: mfisher87

README.rst

@@ -43,4 +43,4 @@ python -m viscm --uniform-space buggy-CAM02-UCS -m Bezier edit /tmp/option_d.py
 
 Note that there was a small bug in the assumed sRGB viewing conditions
 while designing viridis. It does not affect the outcome by much. Also
-see `python -m viscm --help`.
+see `python -m viscm --help`.