Minor changes

README.md

@@ -23,22 +23,26 @@ pip install pyoanda
 git clone git@github.com:toloco/pyoanda.git
 cd pyoanda
 python setup.py install
-# Make sure it works
+```
+
+##### Run the tests 
+```bash
 python setup.py test
 ```
 
+
 ### Code example
 
 ```python
     from pyoanda import Client, PRACTICE
 
-    c = Client(
+    client = Client(
         environment=PRACTICE,
         account_id="Your Oanda account ID",
         access_token="Your Oanda access token"
     )
 
-    c.get_instrument_history(
+    client.get_instrument_history(
         instrument="EUR_GBP",
         candle_format="midpoint",
         granularity="S30"
@@ -50,10 +54,10 @@ Note that if you are indenting to use the sandbox environment, you should first
 ```python
     from pyoanda import Client, SANDBOX
 
-    c = Client(environment=SANDBOX)
+    client = Client(environment=SANDBOX)
 
     # Create an account
-    user = c.create_account()
+    user = client.create_account()
 
     # Retrieve the username and accountId values for future use
     print "username: %s\naccount_id: %d" % (user['username'], user['accountId'])