[FIX] Updated development environment setup instructions

[prateekguptaiiitk]

@RocketChat/ios

Closes #2553

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #2575 into develop will decrease coverage by 19.71%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           develop    #2575       +/-   ##
============================================
- Coverage    46.21%   26.49%   -19.72%     
============================================
  Files          625      456      -169     
  Lines        28917    16903    -12014     
============================================
- Hits         13364     4479     -8885     
+ Misses       15553    12424     -3129

Impacted Files	Coverage Δ
...at/Models/Subscription/UnmanagedSubscription.swift	0% <0%> (-94.24%)	⬇️
Rocket.Chat/Models/User/UnmanagedUser.swift	0% <0%> (-70.59%)	⬇️
...Chat/Models/Mapping/LoginServiceModelMapping.swift	0% <0%> (-66.3%)	⬇️
...anagers/Model/AuthManager/AuthManagerRecover.swift	36.36% <0%> (-60.61%)	⬇️
....Chat/Controllers/Auth/WelcomeViewController.swift	30% <0%> (-36.67%)	⬇️
Rocket.Chat/Extensions/Models/AuthExtensions.swift	66.66% <0%> (-33.34%)	⬇️
...t/Views/Subscriptions/SubscriptionsTitleView.swift	12.5% <0%> (-32.24%)	⬇️
Rocket.Chat/Helpers/VoiceOver/VOLocalized.swift	0% <0%> (-25%)	⬇️
Rocket.Chat/Managers/AnalyticsManager.swift	36.17% <0%> (-19.72%)	⬇️
Rocket.Chat/Managers/PushManager.swift	24.13% <0%> (-19.46%)	⬇️
... and 334 more

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[rafaelks]

@prateekguptaiiitk Why deintegrate is necessary here?

[prateekguptaiiitk]

pod deintegrate helps to remove all traces of Cocoapods from the project. So after that if we do pod install we can start to install them afresh. pod update will solve any version inconsistencies. Without pod deintegrate project was throwing random build errors.

[rafaelks]

@prateekguptaiiitk pod update will cause the CocoaPods to update libraries even if they're not in the same version as in Podfile.lock, right? It could cause some inconsistencies between projects in this case I think. Just pod install should be enough for anyone cloning the project, but most of the time that's not even necessary because the Pods folder is already being cloned.

Have you experienced any problems cloning the app for the first time and running it?

[prateekguptaiiitk]

Yes @rafaelks I along with some others experienced problems while setting up the project for the first time and running it. Even running pod install didn't help. When I ran pod deintegrate and then pod install my problem was resolved and project was built successfully.

[rudrankriyam]

While I didn't experience any problem setting up the project for the first time, as the Pods were already there, I think the problem is usually with updating swiftlint and fastlane.