Add mruby-range-ext
Merge pull request #1178 from h2so5/mruby-range-ext

Add mruby-range-ext
Add closing double-quotes
Fix "implementaion" to "implementation"
Add Visual Studio 2010 subsection to Toolchains section of README.md

To follow h2so5/add-vs2010-toolchain
Update doc/compile/README.md about mruby and mirb
Merge pull request #1179 from carsonmcdonald/mrubyhtypofix

Fix "implementaion" to "implementation"
Merge pull request #1181 from trmmy/follow_readme_adding_vs2010.rake

Add "Visual Studio 2010" subsection to "Toolchains" section of doc/compile/README.md
Merge pull request #1180 from trmmy/typo

Add closing double-quotes to doc/compile/README.md
Merge pull request #1182 from trmmy/move_tools

Update doc/compile/README.md about mruby and mirb
Add Proc#arity
Merge pull request #1183 from h2so5/proc-arity

Add Proc#arity
rollback stack before executing ensure clause.
catching NameError here is not desirable.
Minor code format changes.
Fix typo.
Merge pull request #1184 from iij/pr-ensure-on-correct-stack

Rollback stack before executing ensure clause.
Merge pull request #1186 from carsonmcdonald/mrbcfixup

Minor format changes and a typo fix
Add mruby-proc-ext
Merge pull request #1187 from h2so5/mruby-proc-ext

Add mruby-proc-ext