README.md in gv-0.0.1 vs README.md in gv-0.0.2

@@ -1,8 +1,8 @@
 # GV
 
-TODO: Write a gem description
+Ruby bindings for libgvc (Graphviz) using FFI.
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -18,14 +18,39 @@
 
     $ gem install gv
 
 ## Usage
 
-TODO: Write usage instructions here
+### Create new graph:
+```ruby
+require 'gv'
 
+graph = GV::Graph.open 'g'
+graph.edge 'e', graph.node('A'), graph.node('B', shape: 'polygon')
+
+# render to string
+graph.render 'png'
+
+# or to a file
+graph.write 'result.png'
+```
+
+#### Result 
+![resilt](/spec/render.png)
+  
+### Load existing graph from `.dot` file:
+```ruby
+require 'gv'
+
+graph = GV::Graph.load File.open('g.dot')
+
+# render graph
+graph.render
+```
+
 ## Contributing
 
-1. Fork it ( https://github.com/[my-github-username]/gv/fork )
+1. Fork it ( https://github.com/furunkel/gv/fork )
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Add some feature'`)
 4. Push to the branch (`git push origin my-new-feature`)
 5. Create a new Pull Request