Markdown fixes.

README.md

@@ -77,7 +77,7 @@ Examples
 
 >>> language_dict
 {u'Swedish': 0.00033330636691921914, u'Lithuanian': 0.007328693814717631, u'Vietnamese': 0.0002686116137658802, u'Romanian': 8.133913804076592e-06, ...}
-
+```
 
 Batch API Access
 ----------------
@@ -89,7 +89,7 @@ If you'd like to use our batch api interface, please send an email to contact@in
 >>> batch_sentiment(['Text to analyze', 'More text'], auth=("example@example.com", "********"))
 ```
 
-Authentication credentials can also be set as the environment variables "INDICO_USERNAME" and "INDICO_PASSWORD" or as 'username' and 'password' in the indicorc file.
+Authentication credentials can also be set as the environment variables `$INDICO_USERNAME` and `$INDICO_PASSWORD` or as `username` and `password` in the indicorc file.
 
 Private cloud API Access
 ------------------------
@@ -101,9 +101,9 @@ If you're looking to use indico's API for high throughput applications, please c
 >>> sentiment("Text to analyze", cloud="example", auth=("example@example.com", "********"))
 ```
 
-The `cloud` parameter redirects API calls to your private cloud hosted at [cloud].indico.domains. 
+The `cloud` parameter redirects API calls to your private cloud hosted at `[cloud].indico.domains` 
 
-Private cloud subdomains can also be set as the environment variable "INDICO_CLOUD" or as 'cloud' in the indicorc file.
+Private cloud subdomains can also be set as the environment variable `$INDICO_CLOUD` or as `cloud` in the indicorc file.
 
 Configuration
 ------------------------
@@ -124,8 +124,11 @@ cloud = example
 
 Environment variables take precedence over any configuration found in the indicorc file.
 The following environment variables are valid:
- - $INDICO_USERNAME
- - $INDICO_PASSWORD
- - $INDICO_CLOUD
+
+```
+$INDICO_USERNAME
+$INDICO_PASSWORD
+$INDICO_CLOUD
+```
 
  Finally, any values explicitly passed in to an api call will override configuration options set in the indicorc file or in an environment variable.