I've updated one of the Keywarden farming (for infernal machines) profiles and plugin packs from the DemonBuddy forums to work with the 2.0 changes.
All I did was fix a few compiling errors, fix the SNo's of the mobs and keys, and remove unnecessary NV stacking functions. I had to remove some of the log functions, so it's pretty much what you see is what you get. I take no responsibility for any bot-stuck issues, as I have not plotted the points.
Remember, you need to change your game difficulty to T1+ in the bot settings, and you need to have the Keyrun plugin enabled before you run the START-HERE profile.
As a quick rundown, this pack will have DB farm the three keywardens in the 2.0 (RoS) patch, first checking to see which keys you need more of before switching to the appropriate profile. Your Trinity settings can and will impact the effectiveness of these profiles so take the time to configure it appropriately!
Guide:
1) Extract Keyrun.zip to your demonbuddy directory, overwriting plugins and profiles folders.
2) Start Demonbuddy, enable the KeyRun plugin, and go into bot settings and change the difficulty dropdown to Torment 1 or higher.
3) Load A1-A3_START_HERE.xml in the A1-A3 Keyhunt v4.0 folder in your profiles folder
Starting the bot will cause it to load into the current act, check your stash, then it will leave and load the act for the keywarden that you have the least keys from.