adds conditional statements to string helpers
cleans up readme
Merge pull request #76 from thegreatsunra/master

cleans up readme
Merge branch 'origin/master'
Merge branch 'origin/master'
renames delta task to "coverage"
adds tests for ellipsis helper, moves formatPhoneNumber helper to numbers
rebuilds readme
Merge pull request #77 from jonschlinkert/master

adds test coverage for ellipsis, merges in readme updates
Merge branch 'layout-helpers' of http://github.com/doowb/handlebars-helpers
Updating layout helpers

Adding a `mode` to layout helpers to allow prepending, appending
or replacing the blocks of content.