Fixes to README markdown code examples so passes setup.py checks

Author: brews

README.md

@@ -9,20 +9,20 @@ A Python package to quickly fetch carbon reservoir records at the Marine Reservo
 The carbonferret package is simple, but powerful. For instance, let's say we want to find two sediment records 
 nearest 0° latitude, 0° longitude. We can open a python session and run:
 
-```python
-import carbonferret as cf
 
-results = cf.find_near(lat=0, lon=0, n=2)
-```
+    import carbonferret as cf
+    
+    results = cf.find_near(lat=0, lon=0, n=2)
+
 
 The variable `results` is a [pandas](http://pandas.pydata.org/) DataFrame with information on sample location and 
 reservoir values, among other variables provided by the Marine Reservoir Correction database.
 
 We can take advantage of this. For example, we could find the average ΔR of these sites.
 
-```python
-results['DeltaR'].mean()
-```
+
+    results['DeltaR'].mean()
+
 Of course there are several other variables that we can look at, such as site references or site location.
 
 This can be useful if you want to look up a few quick numbers in the lab, or if you're writing a script to 
@@ -32,9 +32,9 @@ analyze hundreds of marine sediment cores.
 
 You can install the package [from PyPI](https://pypi.python.org/pypi/carbonferret) with
 
-```
-pip install carbonferret
-```
+
+    pip install carbonferret
+
 
 ## Development and Support