Fixed indentation of leading-dot multi-line method-chains. ugh

[zenspider]

Should fix #46. I'd like @vzvu3k6k to look at this and sanity check. They know this section of the code better than I do.

[vzvu3k6k]

It looks good to me. And much interesting.

Ripper.lex <<HERE
foo
  .bar
HERE

#=> [[[1, 0], :on_ident, "foo"],
#    [[1, 3], :on_period, "\n"], # "\n" is period!
#    [[2, 0], :on_ident, "  .bar"],
#    [[2, 6], :on_nl, "\n"]]

I doubt this ripper's behavior is by design, but I can't find any case where this patch fails, and it seems to work fine in probably all version of ruby which enhanced-ruby-mode supports.

(And I wrote a simple test script for rbenv users.)

[wjlroe]

This seems to have reared its ugly head again:

 % rbenv each ruby ~/Dropbox/Code/test-ruby-indent.rb
2.2.0-p0: false
2.2.1-p85: false
2.2.2-p95: false

The output of Ripper.lex for all these rubies is:

[[[1, 0], :on_ident, "foo"],
 [[1, 3], :on_ignored_nl, "\n"],
 [[2, 0], :on_sp, "  "],
 [[2, 2], :on_period, "."],
 [[2, 3], :on_ident, "bar"],
 [[2, 6], :on_nl, "\n"]]