Remove CoinURL as a supported service

The company went out of business, https://coinurl.com and https://cur.lv
no longer work :(

README.md

@@ -8,7 +8,6 @@ This plugin allows you to redirect all shortlinks through a link monetizer.
 Currently, the following shorteners are supported:
   * [AdFly](https://adf.ly/?id=2777408), trigger: `a/`
   * [AdFoc.us](https://adfoc.us/?refid=287608), trigger `f/`
-  * [CoinURL](https://coinurl.com/index.php?ref=5e7f93ae61a2bf890b40bd470929998b), trigger `c/`
   * [ouo.io](https://ouo.io/ref/0IqYvHOo), trigger `o/`
 
 Going to a shorturl with a trigger before it will automatically forward the url through the selected service (ex *sho.rt/a/test*). If it recognizes a trigger but there is no associated service it will not monetize the link.
@@ -35,12 +34,6 @@ To properly setup this plugin, you need to manually change the IDs from the defa
 2. Navigate to [this url](http://adfoc.us/tools/site-links)
 3. Your ID is the number after '?id='
 
-### CoinURL
-1. Ensure you have a valid account and are logged in
-2. Navigate to [this url](https://coinurl.com/profile-dynamic.php)
-3. Click the 'Show code' button (both work)
-4. Your ID is the part after 'var id =' without the double quotes
-
 ### ouo.io
 1. Ensure you have a valid account and are logged in
 2. Navigate to [this url](https://ouo.io/manage/tools/full-page-script)

plugin.php

@@ -10,16 +10,14 @@
 
 if( !defined( 'YOURLS_ABSPATH' ) ) die();
 
-define( 'TRIGGERS', array('a/', 'f/', 'c/', 'o/') ); // Add any possible trigger to use here
+define( 'TRIGGERS', array('a/', 'f/', 'o/') ); // Add any possible trigger to use here
 
 define( 'ADFLY_ID', '2777408' ); // Replace this with your Adfly ID
 define( 'ADFOCUS_ID', '287608' ); // Replace this with your Adfoc.us ID
-define( 'COINURL_ID', 'ab87bdb66600433a8bd4fd87aabd896a' ); // Replace this with your CoinURL ID
 define( 'OUO_ID', '0IqYvHOo' ); // You get the drill
 
 define( 'ADFLY_DOMAIN', 'https://adf.ly' ); // If you have a custom Adfly domain, replace this with it
 define( 'ADFOCUS_DOMAIN', 'https://adfoc.us' ); // Same for this
-define( 'COINURL_DOMAIN', 'https://cur.lv' ); // CoinUrl doesn't allow custom domains, but just incase it is configurable
 define( 'OUO_DOMAIN', 'https://ouo.io' ); 
 
 yourls_add_action( 'loader_failed', 'check_for_redirect' ); // On url fail, check here
@@ -39,8 +37,6 @@ function redirect_to_advert( $url, $code ) {
   if ( doAdvert ) {
     if ( redirectService == 'f' ) { // Use adfocus
       return ADFOCUS_DOMAIN . '/serve/sitelinks/?id=' . ADFOCUS_ID . '&url=' . $url;
-    } else if ( redirectService == 'c' ) { // Use CoinURL
-      return COINURL_DOMAIN . '/redirect.php?id=' . COINURL_ID . '&url=' . rawurlencode($url);
     } else if ( redirectService == 'a' ) { // Adfly
       return ADFLY_DOMAIN . '/' . ADFLY_ID . '/' . $url;
     } else if ( redirectService == 'o' ) { // OUO.io