Fix typos in README.md/CHANGES.txt
diff --git a/objectivec/README.md b/objectivec/README.md
index 452feca..c7313e4 100644
--- a/objectivec/README.md
+++ b/objectivec/README.md
@@ -10,7 +10,7 @@
 Requirements
 ------------
 
-The Objective C implemention requires:
+The Objective C implementation requires:
 
 - Objective C 2.0 Runtime (32bit & 64bit iOS, 64bit OS X).
 - Xcode 7.0 (or later).