README.md in mireru-0.0.7 vs README.md in mireru-0.0.8

@@ -10,18 +10,28 @@
 
 ### Launch
 
     $ mireru [FILE...]
 
-If no argument then search current directory.
+If no argument, then search current directory.
 
 ### Keybind
 
+#### Common
+
 n: next
 
 p: prev
 
+r: reload
+
 q: quit
+
+#### Image
+
+f: fits window size
+
+o: original size
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)