Updating README to note OS X specific caveats (from #15)
Updating README to note OS X specific caveats (from #15)

file:a/README.md -> file:b/README.md
--- a/README.md
+++ b/README.md
@@ -187,6 +187,18 @@
 ./HLS-Stream-Creator.sh example.avi 10
 ```
 
+
+OS X Users
+------------
+
+Segment encryption won't work out of the box on OS X as it relies on arguments which the BSD `grep` and `sed` commands don't support. In order to use encryption on OS X you must first install their GNU counterparts
+
+```
+brew install gnu-sed --with-default-names
+brew install grep --with-default-names
+```
+
+
 License
 --------