Wikipedia Edit: Keystone, CO ski resort

In this edit I added that the Keystone Ski Resort occupied 3 separate mountains instead of only one. Also, I added several other statistics such as the base elevation of the resort, the summit elevation of the highest mountain, and also the difficulty ratings of trails found at Keystone. Lastly, I found that Keystone had 19 ski lifts and not 20 as it was previously stated. Not a big deal, but I felt it needed to be changed. All of the statistics I used can be found at http://keystone.snow.com/info/wintermountaininfo.asp#statistics .