CB-13927 - Modified xcodeProjDir to filter out files/folders that con…

…tain "._" (#355)

* Modified xcodeProjDir to filter out files/folders that contain "._"

I ran into an issue trying to add an ios plugin using a virtual machine.  The code would return an array for the xcodeProjDir and then of course use the wrong one.  It would use the one starting with "._ProjectName" which I believe is an MacOS hidden folder.  I attempted to install the plugin on OsX but because it's a virtual machine it still had those hidden folders.   I've made it so that it will filter those out while looking for the proper xCode project folder.

bin/templates/scripts/cordova/Api.js

@@ -66,7 +66,17 @@ function Api (platform, platformRootDir, events) {
     var xcodeCordovaProj;
 
     try {
-        xcodeProjDir = fs.readdirSync(this.root).filter(function (e) { return e.match(/\.xcodeproj$/i); })[0];
+
+        var xcodeProjDir_array = fs.readdirSync(this.root).filter(function (e) { return e.match(/\.xcodeproj$/i); });
+        if (xcodeProjDir_array.length > 1) {
+            for (var x = 0; x < xcodeProjDir_array.length; x++) {
+                if (xcodeProjDir_array[x].substring(0, 2) === '._') {
+                    xcodeProjDir_array.splice(x, 1);
+                }
+            }
+        }
+        xcodeProjDir = xcodeProjDir_array[0];
+
         if (!xcodeProjDir) {
             throw new CordovaError('The provided path "' + this.root + '" is not a Cordova iOS project.');
         }