docs: need to open Xcode for iOS

DEVELOPING.md

@@ -59,27 +59,27 @@ gulp prerelease;
 > **[optional]** Update [iOS SDK](https://github.com/BranchMetrics/ios-branch-deep-linking/tags) (will need to update `plugin.xml` dependencies if new iOS files)
 
 ```sh
-./src/ios/dependencies/update.sh 0.12.14;
+./src/ios/dependencies/update.sh 0.12.20;
 ```
 
 ### Test
 
 > Modify `BRANCH_KEY` and `URI_SCHEME` and `config.xml` to values in [Branch Dashboard](https://dashboard.branch.io/settings/link)
 
 ```sh
-gulp prerelease && cd testbed && npm install -g cordova && cordova platform remove ios && cordova platform remove android && cordova platform remove browser && cordova platform add ios && cordova platform add android && cordova plugin remove io.branch.sdk && cordova plugin add ../ --variable BRANCH_KEY=key_live_icCccJIpd7GlYY5oOmoEtpafuDiuyXhT --variable URI_SCHEME=enefftest;
+gulp prerelease; cd testbed; npm install -g cordova; cordova platform remove ios; cordova platform remove android; cordova platform remove browser; cordova platform add ios; cordova platform add android; cordova plugin remove io.branch.sdk; cordova plugin add ../ --variable BRANCH_KEY=key_live_icCccJIpd7GlYY5oOmoEtpafuDiuyXhT --variable URI_SCHEME=enefftest;
 
 # cordova plugin add branch-cordova-sdk --variable BRANCH_KEY=key_live_icCccJIpd7GlYY5oOmoEtpafuDiuyXhT --variable URI_SCHEME=enefftest;
 ```
 
 > Validate all features on both `iOS` and `Android` on `device` only (no `simulator` or `TestFlight`)
 
 ```sh
-cordova build ios --developmentTeam="PW4Q8885U7" --device;
+cordova build ios && open -a Xcode platforms/ios/Branch\ Testing.xcworkspace;
 ```
 
 ```sh
-cordova build android && cordova run android;
+cordova build android; cordova run android;
 chrome://inspect/#devices
 ```