NodeJS generator - Harken to the the warnings ...

[osher]

2 types of warnings are emitted in bulk whenever using the nodeJS generator:

[main] WARN io.swagger.codegen.DefaultCodegen - escapeUnsafeCharacters should be overriden in the code generator with proper logic to escape unsafe characters

and

[main] WARN io.swagger.codegen.DefaultCodegen - escapeQuotationMark should be overriden in the code generator with proper logic to escape single/double quote

I did some guesswork: since JS is a c-type language like C# and Java - I looked there for reference, and followed their example.

[osher]

uhhh....
how do I label it as Server: Nodejs ?

[wing328]

@osher the change looks good to me. Thanks for the contribution.