police: add the force parameter

In some cases you may have npm modules that aren't in the public npm
module database. Add the -f flag to continue running even if that is the
case.

lib/police.js

@@ -68,6 +68,13 @@ police.start = function (argv, callback) {
       police.auth.logout();
     }
 
+    /*
+     * Set force parameter
+     */
+    if (argv.force || argv.f) {
+      police.force = true;
+    }
+
     /*
      * Reads a local file and checks it
      */

lib/police/check.js

@@ -110,6 +110,10 @@ check.npm = function (dep, callback) {
     if (res.statusCode==404) {
       police.winston.warn('Module is MIA (missing in action)'.red.bold);
       police.winston.warn(res.request.uri.href.red);
+      if (police.force) {
+        callback();
+        return;
+      }
       callback(1);
     } else {
       body = JSON.parse(body);

lib/police/help.js

@@ -51,6 +51,7 @@ help.usage = [
   'Miscellaneous police flags'.cyan.bold,
   '',
 
+  '  --force, -f          Continue running even if errors are encountered',
   '  --destroy, -d        Destroys exisiting authentication',
   '  --conf [FILE]        Sets the configuraiton file to be used',
   '  --version, -v        Displays version',