docs: update gem description

Author: grzuy

README.md

@@ -1,8 +1,9 @@
 # OpenSSL::SignatureAlgorithm
 
-This tiny library introduces `OpenSSL::SignatureAlgorithm::ECDSA`, `OpenSSL::SignatureAlgorithm::RSAPSS` and `OpenSSL::SignatureAlgorithm::RSAPKCS1`, so that you can reason in terms of signature algorithms when signing and/or verifying signatures―instead of keys.
-
-This provides a higher level of abstraction, on top of `openssl`'s gem `OpenSSL::PKey::EC`, `OpenSSL::PKey::EC::Point` and `OpenSSL::PKey::RSA`.
+Provides `OpenSSL::SignatureAlgorithm::ECDSA`, `OpenSSL::SignatureAlgorithm::RSAPSS`
+and `OpenSSL::SignatureAlgorithm::RSAPKCS1` ruby object wrapers on top of `OpenSSL::PKey::EC`
+and `OpenSSL::PKey::RSA`, so that you can reason in terms of signature algorithms when
+signing and/or verifying signatures, instead of keys.
 
 [![Gem](https://img.shields.io/gem/v/openssl-signature_algorithm.svg?style=flat-square)](https://rubygems.org/gems/openssl-signature_algorithm)
 [![Travis](https://img.shields.io/travis/cedarcode/openssl-signature_algorithm.svg?style=flat-square)](https://travis-ci.org/cedarcode/openssl-signature_algorithm)

openssl-signature_algorithm.gemspec

@@ -9,12 +9,13 @@ Gem::Specification.new do |spec|
   spec.email         = ["gonzalo@cedarcode.com"]
   spec.license = "Apache-2.0"
 
-  spec.summary = "Signature Algorithm abstraction for openssl ruby gem"
+  spec.summary = "OpenSSL::SignatureAlgorithm helpers for signing and verifying signatures with openssl ruby gem"
+
   spec.description = <<-DESC
-    This tiny library introduces `OpenSSL::SignatureAlgorithm::ECDSA`,
-    `OpenSSL::SignatureAlgorithm::RSAPSS` and `OpenSSL::SignatureAlgorithm::RSAPKCS1`,
-    so that you can reason in terms of signature algorithms when signing and/or
-    verifying signatures―instead of keys.
+    Provides OpenSSL::SignatureAlgorithm::ECDSA, OpenSSL::SignatureAlgorithm::RSAPSS
+    and OpenSSL::SignatureAlgorithm::RSAPKCS1 ruby object wrapers on top of OpenSSL::PKey::EC
+    and OpenSSL::PKey::RSA, so that you can reason in terms of signature algorithms when
+    signing and/or verifying signatures, instead of keys.
   DESC
 
   spec.homepage = "https://github.com/cedarcode/openssl-signature_algorithm"