Adding dev documentation for chrome.location

chrome/common/extensions/docs/templates/json/intro_tables.json

 {
   "alarms": {
     "Learn More": [
       {
         "link": "event_pages.html",
         "text": "Event Pages"
       }
     ]
   },
   "app_runtime": {
@@ skipping 132 matching lines @@
         "partial": "intro_tables/see_manifest.html"
       }
     ],
     "Learn More": [
       {
         "link": "https://developers.google.com/live/shows/10479832/",
         "text": "Chrome Office Hours: The Media Galleries API"
       }
     ]
   },
+  "location": {
+    "Permissions": [
+      {
+        "class": "code",
+        "text": "\"location\""
+      }

[not at google - send to devlin, 2013/07/27 01:51:49]

don't need this anymore

[vadimt, 2013/07/27 02:08:55]

Done.

+    ]
+  },
   "notifications": {
     "Learn More": [
       {
         "link": "https://developers.google.com/live/shows/83992232-1001/",
         "text": "Chrome Apps Office Hours: Rich Notifications"
       }
     ]
   },
   "pushMessaging": {
     "Learn More": [
@@ skipping 118 matching lines @@
   },
   "webstore": {
     "Learn More": [
       {
         "link": "https://developers.google.com/chrome/web-store/docs/inline_installation",
         "text": "Using Inline Installation"
       }
     ]
   }
 }