Rule: no-octal-escape

The `no-octal-escape` rule disallows the use of octal escape sequences in string literals:

var foo = "Copyright \251";

This rule matches one with the same behavior in JSLint.

Fixes #246 Fixes #247
Fixing no use before define issues
Rule no redeclare
Adding eslint to jake
Merge pull request #278 from ilyavolodin/no-redeclare

Rule no redeclare (Closes #277)
Merge pull request #281 from ilyavolodin/no-use-before-define

Fixing no use before define issues (Fixes #280)
Merge pull request #282 from ilyavolodin/jake

Adding eslint to jake
Merge pull request #279 from iancmyers/rule-no-octal-escape

Rule: no-octal-escape