Update README.txt

Add in reference to running setupDecompWorkspace to get decompiled classes
Fix AIOOB in BiomeDictionary. Closes #1326
Write the correct default value for StringList comments in the config
Merge pull request #1330 from bonii-xx/master

Write the correct default value for StringList comments in the config
Merge pull request #1300 from zlyfire/patch-1

Update README.txt