Add Scheduling Capabilities

Implement a scheduler based on crontab to execute calls at specific
times.  Using PHP-Cron, we can implement a single cron at the system
level and then use methods to add cron jobs at the PHP level.  This
allows eventually expansion to handling multiple song calls.

.gitignore

@@ -3,3 +3,4 @@ composer.lock
 conf/*.yaml
 files/*.mp3
 files/*.xml
+logs/*.log

README.md

@@ -0,0 +1,6 @@
+install
+
+add cronjob to run master file
+```
+* * * * * cd /path/to/project && php caller.php 1>> /dev/null 2>&1
+```

caller.php

@@ -3,20 +3,26 @@ require 'vendor/autoload.php';
 require 'vendor/twilio/sdk/Services/Twilio.php';
 
 use Symfony\Component\Yaml\Yaml;
+$crontab = new \HybridLogic\Cron\Crontab;
 
 $settings = Yaml::parse('conf/settings.yaml');
-
 $client = new Services_Twilio(
   $settings['twilio']['sid'],
   $settings['twilio']['token']
 );
 
-try {
+
+
+$crontab->add_job(
+  \HybridLogic\Cron\Job::factory('test')
+    ->on('0 10-16 * * *')
+    ->trigger(function() use($settings, $client) {
       $call = $client->account->calls->create(
         $settings['application']['from'],
         $settings['application']['to'],
         $settings['application']['xml']
       );
-} catch(Exception $e) {
-  echo 'Error: ' . $e->getMessage();
-}
+    })
+);
+
+$crontab->run();

composer.json

@@ -1,6 +1,7 @@
 {
   "require": {
     "twilio/sdk": "3.10.*",
-    "symfony/yaml": "2.1.*"
+    "symfony/yaml": "2.1.*",
+    "hybridlogic/cron": "dev-master"
   }
 }