Changing how ssl is configured

Expected configuration:

{
  ssl: {
    key: "/path/to/key",
    cert: "/path/to/cert"
  }
}

If ssl is false, use plain HTTP. If it's an empty object (the default)
use our self-signed certs. If it's set up like above, use the provided
certs.

lib/api.js

@@ -25,17 +25,22 @@ namespace("Cylon", function() {
       if (opts == null) { opts = {}; }
 
       this.opts = opts;
-
       this.host = opts.host || "127.0.0.1";
       this.port = opts.port || "3000";
 
+      if (opts.ssl == false) {
+        this.ssl = false;
+      } else {
+        this.ssl  = opts.ssl  || {key: __dirname + "/ssl/server.key", cert: __dirname + "/ssl/server.crt"};
+      }
+
       this.master = opts.master;
       this.server = express();
 
-      if (opts.ssl) {
+      if (!!this.ssl.cert && !!this.ssl.key) {
         var options = {
-          cert: fs.readFileSync(opts.cert || __dirname + "/ssl/server.crt"),
-          key: fs.readFileSync(opts.key || __dirname + "/ssl/server.key")
+          cert: fs.readFileSync(this.ssl.cert),
+          key: fs.readFileSync(this.ssl.key)
         }
 
         this.server.node = https.createServer(options, this.server);
@@ -65,9 +70,12 @@ namespace("Cylon", function() {
       this.server.node.listen(this.port, this.host, null, function() {
         var title = self.server.get('title');
         Logger.info(title + " is now online.");
-        Logger.info("Listening at https://" + self.host + ":" + self.port);
-        if(!self.opts.ssl) {
+
+        if(self.opts.ssl == false) {
+          Logger.info("Listening at http://" + self.host + ":" + self.port);
           Logger.warn("API using insecure connection. We recommend using an SSL certificate with Cylon.");
+        } else {
+          Logger.info("Listening at https://" + self.host + ":" + self.port);
         }
       });
     };

lib/cylon.js

@@ -50,7 +50,7 @@ var Cylon = (function() {
         key: null,
         auth: {},
         CORS: null,
-        ssl: false
+        ssl: null
       };
 
       this.robot = bind(this.robot, this);