Fix syntax error in strict mode.

[michaelhue]

Functions in lib/args_types.js use the reserved word arguments as a variable name which results in a syntax error when running in strict mode. Renamed the variable to args (in line with other functions in the library) in order to support strict mode.

[michaelhue]

Error message for reference:

api_1 | [nodemon] starting `node --harmony --use-strict .`
api_1 | /app/node_modules/massive/lib/arg_types.js:7
api_1 | exports.queryArgs = function(arguments){
api_1 |                              ^^^^^^^^^
api_1 | 
api_1 | SyntaxError: Unexpected eval or arguments in strict mode
api_1 |     at exports.runInThisContext (vm.js:53:16)
api_1 |     at Module._compile (module.js:404:25)
api_1 |     at Object.Module._extensions..js (module.js:432:10)
api_1 |     at Module.load (module.js:356:32)
api_1 |     at Function.Module._load (module.js:313:12)
api_1 |     at Module.require (module.js:366:17)
api_1 |     at require (module.js:385:17)
api_1 |     at Object.<anonymous> (/app/node_modules/massive/lib/runner.js:5:16)
api_1 |     at Module._compile (module.js:425:26)
api_1 |     at Object.Module._extensions..js (module.js:432:10)
api_1 |     at Module.load (module.js:356:32)
api_1 |     at Function.Module._load (module.js:313:12)
api_1 |     at Module.require (module.js:366:17)
api_1 |     at require (module.js:385:17)
api_1 |     at Object.<anonymous> (/app/node_modules/massive/index.js:1:76)
api_1 |     at Module._compile (module.js:425:26)
api_1 | [nodemon] app crashed - waiting for file changes before starting...

[robconery]

Thanks!@