add instructions on building from source

README.md

@@ -13,6 +13,13 @@ To install:
 
 This will place a ``t`` executable in your path.
 
+***UPDATE***: The current gem release seems to be having issues installing and the gem ownership on RubyGems.org is currently in the process of being transferred.  Meanwhile, here is how to build the latest master from source:
+
+    $ git clone https://github.com/samg/timetrap
+    $ cd timetrap
+    $ gem build timetrap
+    $ gem install timetrap_X.X.X.gem
+
 If you have errors while parsing the documentation, use `--no-document` option when installing the gem, or other option is to `gem install rdoc` before installing the `timetrap`. This is a known issue from [rdoc](https://github.com/ruby/rdoc/commit/5f9603f35d8e520c761015810c005e4a5beb97c3)
 
 ### Basic Usage