Allow to enable/disable verbose mode

[basiclines]

Having a big project with Wintersmith makes the terminal flooded by the project structure in each build.

 env.logger.info "rendering tree:\n#{ ContentTree.inspect(contents, 1) }\n"

https://github.com/jnordberg/wintersmith/blob/master/src/core/renderer.coffee#L40

My suggestion is to make logging optional via config.js in this way will be available in the CLI and custom builds.

[basiclines]

Just to clarify things, i know there is a wintersmith build -q option to only show critical errors. What i mean is an implementation that also supports quite mode on custom builds via:

    var env = wintersmith(config);
    env.build(function(error) {
        if (error) throw error;
    });

[jnordberg]

If you construct the environment you can pass your own logger.

var env = new wintersmith.Environment(config, workDir, logger)

[basiclines]

Got it working reimplementing those methods:

var logger = {
    error: function(error) {
        console.log("error", error);
    },

    warn: function(warn) {
    },

    verbose: function(verbose) {
    },

    silly: function(silly) {
    }
}

but i had to add "ignore": [], rule at my config.json, otherwise i got a JS error:

node_modules/wintersmith/lib/core/content.js:275
      if (env.config.ignore.length > 0) {
                           ^

TypeError: Cannot read property 'length' of undefined
    at filterIgnored (/Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/lib/core/content.js:275:28)
    at fn (/Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:746:34)
    at /Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:1213:16
    at /Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:166:37
    at /Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:706:43
    at /Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:167:37
    at Immediate._onImmediate (/Library/WebServer/Documents/comprea/frontend/node_modules/wintersmith/node_modules/async/lib/async.js:1206:34)
    at tryOnImmediate (timers.js:543:15)
    at processImmediate [as _immediateCallback] (timers.js:523:5)