Initial pod file and pod install.

Podfile

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+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+platform :osx, '10.11'
+
+target 'ShadowsocksX-NG' do
+
+  # Comment this line if you're not using Swift and don't want to use dynamic frameworks
+  use_frameworks!
+  pod 'libev', '~> 4.15'
+  pod 'OpenSSL-Universal', '1.0.1.l'
+  pod 'libsodium', '~> 1.0.3'
+  
+
+  # Pods for ShadowsocksX-NG
+
+  target 'ShadowsocksX-NGTests' do
+    inherit! :search_paths
+    # Pods for testing
+  end
+
+  target 'ShadowsocksX-NGUITests' do
+    inherit! :search_paths
+    # Pods for testing
+  end
+
+end