[docs][ios] Remove react native link support due to issues and update documentation

bin/cocoapods.sh

@@ -1,55 +0,0 @@
-#!/bin/sh
-
-ios_dir=`pwd`/ios
-if [ -d ios_dir ]
-  then
-  exit 0
-fi
-
-podfile="$ios_dir/Podfile"
-template=`pwd`/node_modules/react-native-firebase/ios/Podfile.template
-template_content=`cat $template`
-
-project_name=$(node -pe "require('./package.json').name")
-
-echo "Checking Podfile in iOS project $project_name ($podfile)"
-
-if [ -f $podfile ]
-  then
-  echo ""
-  echo "Found an existing Podfile, Do you want to override it? [N/y]"
-  read generate_env_file
-
-  if [ "$generate_env_file" != "y" ]
-    then
-    echo "Add the following pods":
-    echo ""
-    echo ""
-    cat $template
-    echo ""
-    echo ""
-    echo "and run 'pod install' to install RNFirebase for iOS"
-    exit 0
-  fi
-
-  rm -f $podfile
-  rm -f "$podfile.lock"
-fi
-
-echo "Adding Podfile to iOS project"
-
-touch ios/Podfile
-cat >ios/Podfile <<EOL
-target '${project_name}' do
-  # Uncomment the next line if you're using Swift or would like to use dynamic frameworks
-  # use_frameworks!
-  # Pods for '${project_name}'
-end
-
-# RNFirebase
-${template_content}
-EOL
-
-echo "Installing Pods"
-
-pod install --project-directory=ios

bin/prepare.sh

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-## https://github.com/auth0/react-native-lock/blob/master/bin/prepare.sh
-
-echo "Preparing to link react-native-firebase for iOS"
-
-echo "Checking CocoaPods..."
-has_cocoapods=`which pod >/dev/null 2>&1`
-if [ -z "$has_cocoapods" ]
-then
-  echo "CocoaPods already installed"
-else
-  echo "Installing CocoaPods..."
-  gem install cocoapods
-fi