[🐛] Not a bug but some clarifications about setup

[MarlonAEC]

Describe the issue
I was installing Android and there are some steps that didn't work for me. For example I was able to make it work like this:

1. On the step 3 of Android installation instead of implementation project(path: ':@loadsmart_rn-salesforce-chat') I changed to implementation project(':loadsmart_rn-salesforce-chat')
2. For the step 4 I didn't have to add the new RNSalesforceChatPackage() to the getPackages it gives me an error after a success build complaining about this because it was already added maybe because this is part of the manual installation

The rest of the steps worked perfectly as the docs explained on Android and I was able to use the chat with salesforce

For IOS it give me and error at the beginning about setting the minimum deployment target to low: (I had 11 and the library required 12), I changed that and it worked perfectly also. I was wondering if there is something we can do to avoid setting this minimum deployment target to 12? since a lot of my customers are using IOS 11 I was hopping not to set this restriction in order to use this library since is the only one that worked for the salesforce chat. Is there a way to set this deployment lower in the library? it's possible? Thanks in advance!
NOTE: Please let me know if this changes in the setup process for Android are ok and I will be happy to create a PR to update the docs.

To Reproduce
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Expected behavior
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Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]

rn-salesforce-chat version (please complete the following information):

• Version: 3.2.0

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