Change examples to import as oss instead of os2s.

This is easier to type.

Author: gadamc

README.md

@@ -7,7 +7,7 @@ Use this when trying to access data on either a Softlayer or Bluemix ObjectStore
 
 #### Using Swift Driver
 ```python
-import ibmos2spark as os2s
+import ibmos2spark as oss
 
 #To obtain these credentials in IBM Spark, click the "insert to code" 
 #button below your data source found on the panel to the right of your notebook.
@@ -23,15 +23,15 @@ credentials = {
 
 credentials['name'] = 'my_bluemix_os'  #you can give any name you like
 
-bmos = os2s.bluemix(sc, credentials)  #sc is the SparkContext instance
+bmos = oss.bluemix(sc, credentials)  #sc is the SparkContext instance
 
 data = sc.textFile(bmos.url(container_name, file_name))
 ```
 
 #### Using Stocator (Swift2d) Driver
 
 ```python
-import ibmos2spark as os2s
+import ibmos2spark as oss
 
 #To obtain these credentials in IBM Spark, click the "insert to code" 
 #button below your data source found on the panel to the right of your notebook.
@@ -47,7 +47,7 @@ credentials = {
 
 credentials['name'] = 'my_bluemix_os'  #you can give any name you like
 
-bmos = os2s.bluemix2d(sc, credentials)  #sc is the SparkContext instance
+bmos = oss.bluemix2d(sc, credentials)  #sc is the SparkContext instance
 
 data = sc.textFile(bmos.url(container_name, file_name))
 ```
@@ -58,29 +58,29 @@ data = sc.textFile(bmos.url(container_name, file_name))
 #### Using Swift Driver
 
 ```python
-import ibmos2spark as os2s
+import ibmos2spark as oss
 
 #you need to know the credentials to your Softlayer ObjectStore.
 
 #sc is the SparkContext instance
 #you can give any name you like
 
-slos = os2s.softlayer(sc, "my_softlayer_os", auth_url, username, password)
+slos = oss.softlayer(sc, "my_softlayer_os", auth_url, username, password)
 
 data = sc.textFile(slos.url(container_name, file_name))
 ```
 
 #### Using Stocator (Swift2d) Driver
 
 ```python
-import ibmos2spark as os2s
+import ibmos2spark as oss
 
 #you need to know the credentials to your Softlayer ObjectStore.
 
 #sc is the SparkContext instance
 #you can give any name you like
 
-slos = os2s.softlayer2d(sc, "my_softlayer_os", auth_url, tenant, username, password)
+slos = oss.softlayer2d(sc, "my_softlayer_os", auth_url, tenant, username, password)
 
 data = sc.textFile(slos.url(container_name, file_name))
 ```