remove connect export in favor of single function

Since connect was the only function exported, we can just export the
function directly to make things simpler.

README.md

@@ -31,9 +31,11 @@ The localtunnel client is also usable through an API (for test integration, auto
 ```javascript
 var localtunnel = require('localtunnel');
 
-var client = localtunnel.connect({
-    // the localtunnel server
-    host: 'http://localtunnel.me',
+var client = localtunnel({
+    // the localtunnel server to proxy through
+    // default is localtunnel.me
+    //host: 'http://localtunnel.me',
+
     // your local application port
     port: 12345
 });

client.js

@@ -242,7 +242,7 @@ Tunnel.prototype.close = function() {
     self.emit('close');
 };
 
-module.exports.connect = function(opt) {
+module.exports = function localtunnel(opt) {
     var client = Tunnel(opt);
     client.open();
     return client;

test/index.js

@@ -21,7 +21,7 @@ test('setup local http server', function(done) {
 });
 
 test('setup localtunnel client', function(done) {
-    var client = localtunnel.connect({
+    var client = localtunnel({
         port: test._fake_port
     });
 
@@ -67,7 +67,7 @@ test('query localtunnel server w/ ident', function(done) {
 });
 
 test('request specific domain', function(done) {
-    var client = localtunnel.connect({
+    var client = localtunnel({
         port: test._fake_port,
         subdomain: 'abcd'
     });