Dos line endings causes Refactor plugin to fail

Hello!

Dos line endings causes the following nasty error on Vim startup:

```
% gvim .
% Error detected while processing /Users/user/.dotfiles/vim/bundle/refactor/plugin/refactor.vim:
line   45:
E492: Not an editor command: ^M
line   53:
E492: Not an editor command: ^M
line   55:
E15: Invalid expression: ["auto", "const", "double", "float", "int", "short", "struct", "unsigned", "break", "continue", "else", "for", "long", "signed", "switch", "void", "case", "default", "enum", "goto", "register", "sizeof", "typedef", "volatile", "char", "do", "extern", "if", "return", "static", "union", "while", "asm", "dynamic_cast", "namespace", "reinterpret_cast", "try", "bool", "explicit", "new", "static_cast", "typeid", "catch", "false", "operator", "template", "typename", "class", "friend", "private", "this", "using", "const_cast", "inline", "public", "throw", "virtual", "delete", "mutable", "protected", "true", "wchar_t", "size_t"]^M
line   56:
E492: Not an editor command: ^M
line   58:
E15: Invalid expression: '\<\h\w*\>'^M
line   59:
E15: Invalid expression: '\s*[*&]*\s*'^M
line   60:
E121: Undefined variable: s:IdentifierPattern
E15: Invalid expression: s:IdentifierPattern . s:TypePostfixPattern^M
line   62:
E121: Undefined variable: s:TypeElementPattern
E15: Invalid expression: '\%(' . s:TypeElementPattern . '\%(' . s:TemplateParameterPattern . s:TypePostfixPattern . '\)*' . s:TypePostfixPattern . '\)\+'^M
line   64:
E15: Invalid expression: '\%(\s\+\n*\s*\|\n\+\|\s*\n*\s\+\)'^M
line   65:
E121: Undefined variable: s:TypeIdentifierPattern
E15: Invalid expression: s:TypeIdentifierPattern . s:MissableSeperatorPattern . s:IdentifierPattern . '\%\(\[\d*\]\)*'^M
line   66:
E121: Undefined variable: s:TypeIdentifierPattern
E15: Invalid expression: '^\s*\%(' . s:TypeIdentifierPattern . s:SeperatorPattern. '\|' . s:IdentifierPattern . '::\)\+' ^M
line   67:
E121: Undefined variable: s:VariableDeclarationPattern
E15: Invalid expression: '(' .  s:MissableSeperatorPattern . '\%(' . s:VariableDeclarationPattern . '\%(\s*,' . s:MissableSeperatorPattern . s:VariableDeclarationPattern . '\)*\)*\s*)'^M
line   68:
E121: Undefined variable: s:FunctionPerfixPattern
E15: Invalid expression: s:FunctionPerfixPattern . s:MissableSeperatorPattern . s:IdentifierPattern . s:MissableSeperatorPattern . s:ParameterListPattern . '[^(){;]*'^M
line   69:
E121: Undefined variable: s:FunctionPattern
E15: Invalid expression: s:FunctionPattern . s:MissableSeperatorPattern . '\%(;\)\@='^M
line   70:
E121: Undefined variable: s:FunctionPattern
E15: Invalid expression: s:FunctionPattern . s:MissableSeperatorPattern . '\%({\)\@='^M
line   71:
E492: Not an editor command: ^M
line   72:
E488: Trailing characters
line  114:
E492: Not an editor command: ^M
line  115:
E488: Trailing characters
line  182:
E492: Not an editor command: ^M
line  183:
E488: Trailing characters
line  220:
E492: Not an editor command: ^M
line  221:
E488: Trailing characters
line  240:
E492: Not an editor command: ^M
line  241:
E488: Trailing characters
line  285:
E492: Not an editor command: ^M
line  286:
E488: Trailing characters
line  359:
E492: Not an editor command: ^M
line  360:
E488: Trailing characters
line  372:
E492: Not an editor command: ^M
line  374:
E488: Trailing characters
line  411:
E492: Not an editor command: ^M
line  412:
E488: Trailing characters
line  424:
E492: Not an editor command: ^M
line  425:
E488: Trailing characters
line  432:
E492: Not an editor command: ^M
line  433:
E488: Trailing characters

```

My commit, basically, changes Dos line endings to Unix ones. This helps to solve this problem.

Cheers,
Alex