To save you the trouble, I went ahead and configured my own for Minecraft.
The joysticks move you as usual.
Right trigger is left click, left is right (this was easier because I was used to RPG's).
"A" is also left click, and "B" is also right click. "Y" is jump, and "X" is "Q", the default drop button.
Start functions as the Escape key.
Back functions as "I", the default inventory key.
Right and left bumpers function as the mouse wheel- clicking right is like scrolling up, and left bumper is down. This is used for weapon/block changes. (This may be too sensitive. Default is +/- 25, adjust as necessary.)
Up on the D-Pad is "1", Left is "2", Right is "3", and Down is "4". Quick, accurate weapon changes, and you can change the numbers as needed.
The software is simple to use. To operate, download the software from Microsoft, and then JoyToKey. Then Download the following link and put it in the same folder as the JTK Application. Run the App, leave it open, and you will be Minecrafting on a 360 controller!
If you have any questions or additions, just let me know. Thanks!
There are apparently bad guys re-packaging it with something 'extra' that you don't need.
The file the OP includes doesn't quite map right, we found the triggers were doing movement, and some other odd stuff, so I spent some time re-mapping it (on my friend's PC so I don't have it to share). It's a good start though, but you'll want to double-check the settings. It might have been a version difference problem with the config file or something, so the OP isn't trying to hurt anybody.
This tool seems better than the one I found for minecraft specifically.
We did find movement to be a bit wonky, but that might be a factor of needing fine-tuning on the settings.
We mapped the joystick to behave more like it does on the 360. So Right stick looks around, left stick moves (forward/back, side to side). With movement, we found that it would keep moving for a full step some times, instead of just moving for as long as we held the stick. So it would move your guy to a bit farther than you'd like. Makes it kind of tricky to stop at the edge of a cliff.
Still, very nice find, and I suspect we might be able to tweak the sensitivity in MC and the amount of mouse signal it gives for movement (we used +/- 50 like the OP did).