fix(ios): make system open tel, sms, mailto and geo links (apache#881)

Author: jcesarmobile

src/ios/CDVWKInAppBrowser.m

@@ -539,8 +539,9 @@ - (void)webView:(WKWebView *)theWebView decidePolicyForNavigationAction:(WKNavig
         [self.commandDelegate sendPluginResult:pluginResult callbackId:self.callbackId];
     }
 
-    //if is an app store link, let the system handle it, otherwise it fails to load it
-    if ([[ url scheme] isEqualToString:@"itms-appss"] || [[ url scheme] isEqualToString:@"itms-apps"]) {
+    //if is an app store, tel, sms, mailto or geo link, let the system handle it, otherwise it fails to load it
+    NSArray * allowedSchemes = @[@"itms-appss", @"itms-apps", @"tel", @"sms", @"mailto", @"geo"];
+    if ([allowedSchemes containsObject:[url scheme]]) {
         [theWebView stopLoading];
         [self openInSystem:url];
         shouldStart = NO;