Update README.md [ci skip]

README.md

+[![pipeline status](https://git.ligo.org/gwinc/pygwinc/badges/master/pipeline.svg)](https://git.ligo.org/gwinc/pygwinc/commits/master)
+
 # Python port of GW Interferometer Noise Calculator
 
-![gwinc](https://git.ligo.org/gwinc/pygwinc/uploads/f324c0ce516db509a4028858faed3891/gwinc.png)
+![gwinc](http://gwinc.docs.ligo.org/pygwinc/aLIGO.png)
 
 ## tests
 
-To compare pygwinc vs. MATLAB gwinc, run the included test command
-(requires a local installation of MATLAB and it's python interface):
+To compare pygwinc vs. matlab gwinc, run the included test command
+(requires a local installation of matlab and its python interface):
 
-*   checkout, or create a link existing checkout of, matlab gwinc in
+*   checkout, or link an existing checkout of, matlab gwinc in
     the test directory:
 
-        $ cd pygwin/gwinc/test
+        $ cd pygwinc/gwinc/test
         $ ln -s ~/ligo/src/iscmodeling/gwinc
 
-*   Execute the test command (specifying path to MATLAB python
+*   Execute the test command (specifying path to matlab python
     interface if needed):
 
         $ PYTHONPATH=/opt/matlab/python/lib/python2.7/site-packages python -m gwinc.test
 
-This will produce difference plots of noises calculated from MATLAB
+This will produce difference plots of noises calculated from matlab
 gwinc and pygwinc.