diff --git a/README.md b/README.md
index 0142e83..8bfcc12 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 [![Dependency Status](https://gemnasium.com/aterris/simplecov-shield.svg)](https://gemnasium.com/aterris/simplecov-shield)
 [![License](http://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 
- 
+
 [SimpleCov](https://github.com/colszowka/simplecov) Formatter to generate coverage badge via [Shields.io](http://shields.io/)
 
 ## Install
@@ -31,6 +31,16 @@ require 'simplecov-shield'
 SimpleCov.formatter = SimpleCov::Formatter::ShieldFormatter
 ```
 
+Or use the executable
+
+```
+simplecov-shield 90
+```
+
+```ruby
+SimpleCov::Formatter::ShieldFormatter.new.run(90)
+```
+
 Badge will be generated at `coverage/coverage.svg`
 
 ## Examples
diff --git a/bin/simplecov-shield b/bin/simplecov-shield
new file mode 100755
index 0000000..d9e852b
--- /dev/null
+++ b/bin/simplecov-shield
@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+require 'simplecov-shield'
+
+unless ARGV[0]
+  puts "required covered percent"
+else
+  SimpleCov::Formatter::ShieldFormatter.run(ARGV[0].to_i)
+end
diff --git a/lib/simplecov-shield.rb b/lib/simplecov-shield.rb
index 04037e4..4f6ff70 100644
--- a/lib/simplecov-shield.rb
+++ b/lib/simplecov-shield.rb
@@ -18,6 +18,11 @@ def format(result)
     generate_shield
   end
 
+  def run(covered_percent)
+    @result = OpenStruct.new({covered_percent: covered_percent})
+    generate_shield
+  end
+
   def generate_shield
     File.open(shield_file_path, 'w') do |file|
       file.write HTTParty.get(shield_url).parsed_response
@@ -58,4 +63,4 @@ def color
   @config.each do |key, val|
     define_method(key) { self.class.config[key] }
   end
-end
\ No newline at end of file
+end
diff --git a/simplecov-shield.gemspec b/simplecov-shield.gemspec
old mode 100644
new mode 100755
index 212ff0c..33e7f96
--- a/simplecov-shield.gemspec
+++ b/simplecov-shield.gemspec
@@ -10,6 +10,7 @@ Gem::Specification.new do |spec|
   spec.homepage      = 'https://github.com/aterris/simplecov-shield'
   spec.license       = 'MIT'
 
+  spec.executables << 'simplecov-shield'
   spec.files         = ['lib/simplecov-shield.rb']
   spec.test_files    = spec.files.grep(%r{^(spec)/})
   spec.require_path  = 'lib'
diff --git a/spec/assets/coverage.svg b/spec/assets/coverage.svg
index 1311637..0bf813a 100644
--- a/spec/assets/coverage.svg
+++ b/spec/assets/coverage.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="99" height="18"><linearGradient id="a" x2="0" y2="100%"><stop offset="0" stop-color="#fff" stop-opacity=".7"/><stop offset=".1" stop-color="#aaa" stop-opacity=".1"/><stop offset=".9" stop-opacity=".3"/><stop offset="1" stop-opacity=".5"/></linearGradient><rect rx="4" width="99" height="18" fill="#555"/><rect rx="4" x="63" width="36" height="18" fill="#4c1"/><path fill="#4c1" d="M63 0h4v18h-4z"/><rect rx="4" width="99" height="18" fill="url(#a)"/><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11"><text x="32.5" y="13" fill="#010101" fill-opacity=".3">coverage</text><text x="32.5" y="12">coverage</text><text x="80" y="13" fill="#010101" fill-opacity=".3">97%</text><text x="80" y="12">97%</text></g></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="94" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect width="94" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h59v20H0z"/><path fill="#4c1" d="M59 0h35v20H59z"/><path fill="url(#b)" d="M0 0h94v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"><text x="305" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="490">coverage</text><text x="305" y="140" transform="scale(.1)" textLength="490">coverage</text><text x="755" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="250">97%</text><text x="755" y="140" transform="scale(.1)" textLength="250">97%</text></g> </svg>
\ No newline at end of file