Update package.json to point 'main' at dist/katex.js

[kevinbarabash]

Summary:
Now that we're using ES6 import statements in our source code
it makes it difficult for people to consume the katex package
as a node module unless they're using node.js version 8.x.

This diff points the node entry point to dist/katex.js which
is the compiled version of katex.js.

Test Plan:

• publish
• create a new project node project and add the new npm katex package as a deep
• require katex in a test file and run it using node.js version 6.x

Fixes: #786

[edemaine]

Testing:

• Install Node 6 (in my case, I use nvm so it's easy to switch between Node versions)
• Within checkout point_main_to_dist, run npm link
• Then in another directory, npm link katex and then try node -e "require('katex')"

But I get the same error. If I change the main key to point to lib/katex.js, it works.

[edemaine]

See above.

[edemaine]

In fact, I think this line edit should be reverted. It's probably good to include the root (ES6) katex.js in the NPM package (why not? then people can choose). dist is already fully included 3 lines below. It's the main key, 6 lines above, that seems to need to change.

[kevinbarabash]

Good call. I totally messed this up. I meant to change main.

[edemaine]

Tested and it works. Thanks @kevinbarabash for implementing this!

[kevinbarabash]

@edemaine thanks for testing it.

[kevinbarabash]

I should probably do an 0.8.2 release now that this has been merged.

[edemaine]

Yeah, makes sense, as this will affect all NPM users. (on Node 6)

[kevinbarabash]

I was thinking that for future major release it might be good to do a couple of RC release to work out the kinks when there are big changes.

[edemaine]

Given our experience with 0.8 and 0.7, that sounds like a good idea. 😄