Update version to snapshot, update slf4j, update scala target
First iteration of Context w tests
Rewrite of grammar and cleanup.

Squashed commit of the following:

commit 446b61c8418afe6d53cdc135f98c1cd512f0f1a4
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Thu Jun 20 16:07:46 2013 -0400

    Cleanup

commit 220592c15f956d8a8bc899eb84579702eb0c8b4b
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Thu Jun 20 15:35:44 2013 -0400

    Complete grammar rewrite

commit 3bbe84982e278abb7f3b631b8534c5b2376c5c26
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Wed Jun 19 19:43:15 2013 -0400

    Complete block/inverse block grammar

commit 220aabd2a6996780d805a636a59c8be35f7005ae
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Wed Jun 19 12:11:35 2013 -0400

    Rewrite comment grammar and nodes

commit f8d4190fe436744ef45bfe4dd24b737b67abbec4
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Wed Jun 19 10:45:27 2013 -0400

    Rewrite partial grammar and ast

commit 48cb3704c33fb888024c3b2e683d3385711c2c82
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Mon Jun 17 17:35:47 2013 -0400

    Add grammar/parser trees for Hash parameters to helpers

commit 07f88795656bbe993ee1496e4b832301a3e9d43c
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Fri Jun 14 15:15:13 2013 -0400

    Typed parameters in helpers grammar

commit ab8fbdebeb6f5b6dcbdc60a05144f95a914460f6
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Fri May 31 18:00:36 2013 -0400

    Begin new Grammar combinator and tests with ScalaTest

commit 4ae4f9455b634e771ba41b5bffa2b8065250ea10
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Fri May 31 18:00:22 2013 -0400

    Add deprecation flag to scala compilation options

commit bdcf8b5c99712b37d83e1e06a0ccbdc6f0a6e82f
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Thu May 30 10:49:28 2013 -0400

    Install ScalaTest

commit 9819fc063664fafdf5ed20501ed2a6f429644885
Author: Mark Wunsch <mark@markwunsch.com>
Date:   Thu May 30 10:06:37 2013 -0400

    Focus on Grammar
Whitespace cleanup
Add support for literal paths (using "[]" syntax) in grammar
Document Apache License usage and cleanup build.sbt
Update Context test to use Identifier instead of string

- Removes temporary test code and change lookup method to accept
  and Identifier
- Removes test for '{{.}}' as it is rejected by the parser
Stubbing out the Handlebars object, adding partials

Stubbed out the Handlebars trait and object to add support
for loading partials from files.
document and add tests for PartialHelper
first bit of visitor tests
Documenting unsupported features
Enable scala 2.9/2.10 cross build

Conflicts:
	build.sbt
the beginning of helpers and completed basic context tests
inverted sections and blocks
more block testing
completed block tests
updating helper documentation
Merge pull request #1 from chrhicks/rc-visitor

Rc visitor
Added built in helpers: if, each, with, and log
Finish up helper tests