Update ruby-sexp-processor to 3.1.0.

=== 3.1.0 / 2012-02-29

* 4 minor enhancements:

  * Added test_call_arglist_trailing_comma__19 (presidentbeef)
  * Added test_fcall_inside_parens. (presidentbeef)
  * Added test_if_args_no_space_symbol__18. (presidentbeef)
  * Added tests for new hash syntax and ternaries in 1.9 (lastobelus)

=== 3.0.10 / 2012-01-04

* 1 minor enhancement:

  * Add test for bare hash at end of array in 1.9. (presidentbeef)

* 1 bug fix:

  * Fixed 1.9.3 warnings

(taca)