use a temporary file instead of relying on system pipe buffer size
[#220] read instead of readlines
[#220] 1.8.7 Subexec works differently
[#221] change comment force rebuild
add module attributes and instance commands to support limits
commenting out jruby-20mode for now
fix verbiage in resource tests. Add test to show application to a command
Update README.md

Document limits
don't build jruby-20mode
don't build jruby-20mode
Merge remote-tracking branch 'origin/master'
Merge branch 'master' of github.com:bmo/minimagick into provide-limit-options-and-commands
Update README.md
remove redundant commands; provide example of limit usage; provide module-level limits
merge fix
Merge branch 'subexec-pipe-too-small'
Merge branch 'provide-limit-options-and-commands'
handling conflict