Add podspec

TronWebSwift.podspec

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+Pod::Spec.new do |spec|
+  spec.name = 'TronWebSwift'
+  spec.version = '1.0.0'
+  spec.summary = 'A Swift wrapper for Tron Web API'
+  spec.description = <<-DESC
+    A Swift wrapper for Tron Web API to interact with Tron blockchain.
+  DESC
+  spec.homepage = 'https://github.com/Whitehare2023/TronWebSwift'
+  spec.license = { :type => 'MIT', :file => 'LICENSE' }
+  spec.author = { 'Math Wallet' => '[email protected]' }
+
+  spec.requires_arc = true
+  spec.source = { git: 'https://github.com/Whitehare2023/TronWebSwift.git', branch: 'add-podspec' }
+  spec.source_files = 'Sources/TronWebSwift/**/*.{h,m,swift}'
+  spec.exclude_files = 'Sources/**/LinuxSupport.swift'
+  spec.ios.deployment_target = '13.0'
+  spec.swift_version = '5.0'
+
+  spec.dependency 'Alamofire', '~> 5.4'
+  spec.dependency 'SwiftProtobuf'
+  spec.dependency 'BigInt'
+  spec.dependency 'PromiseKit'
+  spec.dependency 'CryptoSwift'
+  spec.dependency 'BIP32Swift'
+end

tron_issue_fix.md

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+
+# TronWebSwift Issue Fix
+
+## 问题 / Issue
+在运行 `pod install` 时，出现了以下警告：
+While running `pod install`, the following warnings appeared:
+
+```
+[!] A license was specified in podspec `TronWebSwift` but the file does not exist - /Volumes/WhiteHare_/wallet_ios/TronWebSwift/LICENSE
+[!] Unable to read the license file `LICENSE` for the spec `TronWebSwift (1.0.0)`
+```
+
+## 原因 / Cause
+`TronWebSwift.podspec` 文件中指定了一个不存在的 `LICENSE` 文件。
+The `TronWebSwift.podspec` file specifies a `LICENSE` file that does not exist.
+
+## 解决方法 / Solution
+创建并添加一个 `LICENSE` 文件到 `TronWebSwift` 目录中。以下是 `TronWebSwift.podspec` 的例子：
+Create and add a `LICENSE` file to the `TronWebSwift` directory. Here is an example of the `TronWebSwift.podspec` file:
+
+```ruby
+Pod::Spec.new do |s|
+  s.name             = 'TronWebSwift'
+  s.version          = '1.0.0'
+  s.summary          = 'A Swift wrapper for TronWeb.'
+  s.description      = 'This is a Swift wrapper for TronWeb, providing the necessary functionalities for interacting with Tron blockchain.'
+  s.homepage         = 'https://github.com/mathwallet/TronWebSwift'
+  s.license          = { :type => 'MIT', :file => 'LICENSE' }
+  s.author           = { 'Author Name' => '[email protected]' }
+  s.source           = { :git => 'https://github.com/mathwallet/TronWebSwift.git', :tag => '1.0.0' }
+  s.platform         = :ios, '11.0'
+  s.source_files     = 'TronWebSwift/**/*.{swift,h,m}'
+  s.requires_arc     = true
+end
+```
+
+确保在 `TronWebSwift` 目录中有一个 `LICENSE` 文件。你可以使用 MIT 许可的标准文本，或者根据需要自定义。
+Ensure that there is a `LICENSE` file in the `TronWebSwift` directory. You can use the standard text for the MIT license or customize it as needed.