Merge pull request #473 from Rulikkk/patch-1

Update readme: fix "Dynamid" -> "Dynamoid" in ch. "Type casting"

Author: andrykonchin

README.md

@@ -576,7 +576,7 @@ c.my_new_type
 
 ### Type casting
 
-Dynamid supports type casting and tries to do it in the most convenient
+Dynamoid supports type casting and tries to do it in the most convenient
 way. Values for all fields (except custom type) are coerced to declared
 field types.