Add documentation on the data frames returned

Change-Id: Ifdc9b27829c6ab01aa4d6d7b88c339884a470877
diff --git a/man/cosineSimilarity.Rd b/man/cosineSimilarity.Rd
index 5b30c89..f942028 100644
--- a/man/cosineSimilarity.Rd
+++ b/man/cosineSimilarity.Rd
@@ -2,7 +2,7 @@
 % Please edit documentation in R/derekovecs.R
 \name{cosineSimilarity}
 \alias{cosineSimilarity}
-\title{cosineSimilarity}
+\title{Get cosine similarity}
 \usage{
 cosineSimilarity(w1, w2, ...)
 }