Merge pull request #67 from shamrin/patch-1

syntax highlight last example in README

Author: juliusv

README.md

@@ -329,7 +329,7 @@ This is intended for advanced use cases where you have servers
 exposing Prometheus metrics and need to get them into some other
 system.
 
-```
+```python
 from prometheus_client.parser import text_string_to_metric_families
 for family in text_string_to_metric_families("my_gauge 1.0\n"):
   for sample in family.samples: