add license type to readme

wholmgren · wholmgren · commit a50c8c69a324 · 2015-04-15T08:08:56.000-07:00
diff --git a/README.md b/README.md
@@ -81,6 +81,10 @@ import logging
 logging.getLogger('pvlib').setLevel(logging.DEBUG) # or at least INFO
 ```
 
+License
+=======
+3 clause BSD.
+
 
 Testing
 ============
