change private_method_color and protected_method_color in config.ls to match 'ls --help'.
Fix 'ls -g' shows colored results. If Ruby is post 1.9.2 global_variables returns Array of symbol. So change them to string to compare BUILTIN_GLOBALS or PSEUDO_GLOBALS.
Refactor lib/pry/commands/ls/globals.rb format method.
Merge pull request #1074 from yui-knk/fix-ls-color

Fix ls color