Update README to give basic background and example.

README.md

@@ -144,32 +144,30 @@ Example
 
 A basic example in Python using the provided `vlbi` module looks like:
 
-```
-import time
-import datetime
-import vlbi
-
-url = "http://vlbi.astro.ru.nl:8000/rpc"
-username = "foo"
-password = "bar"
-facility = "SMTO"
-
-client = vlbi.Client(url, facility, username, password, backup=False)
-
-now = datetime.datetime.utcnow()
-s_now = now.isoformat('T') + 'Z'
-
-later = now + datetime.timedelta(seconds=10)
-s_later = later.isoformat('T') + 'Z'
-        
-metadata = {}
-metadata["systemTemperature"] = {"time": s_now, "value": 352.234}
-metadata["observingMode"] = {"time": s_now, "expires": s_later, "value": "VLBI"}
-metadata["maser"] = {"time": s_now, "value": True}
-metadata["maser.chamberTemperature"] = {"time": s_now, "value": 13.325}
-
-record = {"observatory" : "SMTO", "time" : s_now, "metadata" : metadata}
-
-client.updateRecord(record)
-```
+    import time
+    import datetime
+    import vlbi
+    
+    url = "http://vlbi.astro.ru.nl:8000/rpc"
+    username = "foo"
+    password = "bar"
+    facility = "SMTO"
+    
+    client = vlbi.Client(url, facility, username, password, backup=False)
+    
+    now = datetime.datetime.utcnow()
+    s_now = now.isoformat('T') + 'Z'
+    
+    later = now + datetime.timedelta(seconds=10)
+    s_later = later.isoformat('T') + 'Z'
+            
+    metadata = {}
+    metadata["systemTemperature"] = {"time": s_now, "value": 352.234}
+    metadata["observingMode"] = {"time": s_now, "expires": s_later, "value": "VLBI"}
+    metadata["maser"] = {"time": s_now, "value": True}
+    metadata["maser.chamberTemperature"] = {"time": s_now, "value": 13.325}
+    
+    record = {"observatory" : "SMTO", "time" : s_now, "metadata" : metadata}
+    
+    client.updateRecord(record)