This is really close, just a few style things, and some packaging issues. Looks good :D

I'll quote PEP8 again:
"Long lines can be broken over multiple lines by wrapping expressions in parentheses. These should be used in preference to using a backslash for line continuation."

Lets change this to:

description = ("Checks syntax errors and validates JavaScript using the "
               "JSLint tool."

Comments should be a proper sentence, ending with a period.

The upercase variable names give me the impression they are globals. Let's lowercase these.

lets lower case these as well

After the changes suggested below, this should be readable enough without the comments.

Now that you aren't calling int(...) on the numeric keys, how about we combine these.

Also, can you rename this 'jslint_option_keys' and drop the ']' to its own line.

lets lower case 'jslint_options'

I think we can axe this comment, the code itself should be explanatory.

Can you put a blank line between these (RB convention to put a blank line after indented blocks like conditionals and loops)

I think we can axe this comment.

I think it's sufficient to go with something like 'ReviewBotJSLint'

Somewhere in here you need to add:

install_requires=[
    'reviewbot',
]

I'd stick it after entry_points

I would change this description to say that it's a Review Bot tool which runs JSLint. This is actually a description which will be used when this is packaged and distributed as an egg.

I'll quote PEP8 for this one:

"Modules should have short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, although the use of underscores is discouraged."

with that being said, how about we go with something like 'reviewbotjslint' as the package name.

You'll need to rename the reviewbotJSLintTool folder to 'reviewbotjslint' as well.

Very close, just one little nit.

These two variables are still uppercase. Once they are lower cased, I'll commit this.

Ship It!