add missing backticks

Author: yelluw

README.md

@@ -31,7 +31,7 @@ Download latest release to wherever you want to run it from.
 
 On Linux/OSX:
 
-source .venv/bin/activate
+`source .venv/bin/activate`
 
 On Windows:
 
@@ -127,4 +127,4 @@ While they were building the fire, Hogen heard them arguing about subjectivity a
 
 One of the monks replied: 'From the Buddhist viewpoint everything is an objectification of mind, so I would say that the stone is inside my mind.'
 
-'Your head must feel very heavy’, observed Hogen. 'if you are carrying around a stone like that in your mind.'
+'Your head must feel very heavy’, observed Hogen. 'if you are carrying around a stone like that in your mind.'