Rule no-mixed-requires (fixes #221)
Fix loading rules from a rules directory

This fixes an issue where trying to load rules from the command line would fail because the load path was relative to `/lib` rather than the directory of the ESLint process.
bug: Fixes semi rule for VariableDeclaration in ForStatement
Merge pull request #211 from mduvall/semi-bug-var-dec-in-for

bug: Fixes semi rule for VariableDeclaration in ForStatement
Merge pull request #222 from pigulla/no-mixed-requires

Rule no-mixed-requires (fixes #221)
Merge pull request #223 from iancmyers/fix-load-rules-dir

Fix loading rules from a rules directory
Merge pull request #225 from ilyavolodin/performance

Individual perf tests for rules (Closes #224)
Rule: No wrap func