Update podspec. Release 0.0.4

CryptoSwift.podspec

@@ -1,8 +1,8 @@
 Pod::Spec.new do |s|
   s.name         = "CryptoSwift"
-  s.version      = "0.0.3"
-  s.summary      = "Cryptography in Swift"
-  s.description  = "Cryptography functions and helpers for Swift implemented in Swift. SHA, MD5, CRC, AES, Poly1305, ChaCha20."
+  s.version      = "0.0.4"
+  s.summary      = "Cryptography in Swift. SHA, MD5, CRC, Poly1305, HMAC, ChaCha20, AES."
+  s.description  = "Cryptography functions and helpers for Swift implemented in Swift. SHA, MD5, CRC, Poly1305, HMAC, ChaCha20, AES."
   s.homepage     = "https://github.com/krzyzanowskim/CryptoSwift"
   s.license      = {:type => "Attribution License", :file => "LICENSE"}
   s.source       = { :git => "https://github.com/krzyzanowskim/CryptoSwift.git", :tag => "#{s.version}" }