Updated README to include dtsk information

README.md

@@ -311,6 +311,17 @@ The following is a comparison of the supported geocoding APIs. The "Limitations"
 * **Limitations**: "You must not use or display the Content without a corresponding Google map, unless you are explicitly permitted to do so in the Maps APIs Documentation, or through written permission from Google." "You must not pre-fetch, cache, or store any Content, except that you may store: (i) limited amounts of Content for the purpose of improving the performance of your Maps API Implementation..."
 * **Notes**: To use Google Premier set `Geocoder.configure(:lookup => :google_premier, :api_key => [key, client, channel])`.
 
+#### Data Science Toolkit (`:dstk`)
+
+* **Host**: if you are running this behind your own firewall
+* **Quota**: no quota if you are running on your own hardware
+* **Region**: world
+* **SSL support**: ?
+* **Languages**: en
+* **Documentation**: http://www.datasciencetoolkit.org/developerdocs
+* **Terms of Service**: http://www.datasciencetoolkit.org/developerdocs#googlestylegeocoder
+* **Limitations**: None.
+
 #### Yahoo BOSS (`:yahoo`)
 
 Yahoo BOSS is **not a free service**. As of November 17, 2012 Yahoo no longer offers a free geocoding API.