Added indent-with rule

[fondasimone]

Checks if the indentation consist of only tabs or spaces.

See #122.

It uses a simple regexp on every token trivia, skipping comments.
Let me know if there's anything that can be done/tested better.

[fondasimone]

Any comment on this? :)

Does it need fixes? Improvements? Any chance to get into master?

[Bartvds]

I can't judge the implementation, but +1 for this rule.

[ashwinr]

will take a look. thanks!

[ashwinr]

hey @fondasimone sorry for the delay on this. Can you fold this into the existing indent rule? I think a good extension would be supporting indent: [true, "tab", 4] where the second argument has the option of "tab" or "space" and the last argument is the same as it currently exists.

[fondasimone]

Sure, i can give it a try.

What would be the meaning of ["tab", 4]? 4 tabs!??

[ashwinr]

My original comment should have been indent: [true, "spaces", 4], sorry. I think we can safely ignore the indent sizing for tabs.

[fondasimone]

Hey, i found a bit of time to look into this, but i see there's some problem with the indent rule? Should i wait or go ahead and just merge the two?

[ashwinr]

hey @fondasimone, TSLint upgraded its compiler to typescript 1.3. During that upgrade, a lot of the syntax changed and I found the indent rule to be very buggy as it stands. I plan to rewrite it soon as a different rule, so let's use it for specifying "tabs" or "spaces". let me know if you have any questions. thanks.

[fondasimone]

Moved this code into a new PR (#234), guess you can close this one.