Update helpers-strings.js with plusify function

Plusify helper replaces spaces with plus signs.
Modified strings_test.js with plusify tests
Modified helpers-strings.js with inline plusify documentation
Modified docs to include plusify function
Merge pull request #126 from stephenway/patch-1

Update helpers-strings.js with plusify function
bumping version
@trivial fixed link in README
Merge pull request #133 from dwabyick/master

@trivial fixed link in README
convert tmpl.md to .verbrc
get verb working
fixes link
Merge pull request #135 from makotot/verb

Convert docs to use verb