add quickstart example to readme. include badges in readme

3 files changed, 42 insertions, 9 deletions

diff --git a/README.md b/README.md
index 329ad72..a8327b9 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,45 @@
 # Dotavious
 
-A library for generating Graphviz DOT language files for graphs.
+[![crates.io](https://meritbadge.herokuapp.com/dotavious)](https://crates.io/crates/dotavious)
+[![Released API docs](https://docs.rs/dotavious/badge.svg)](https://docs.rs/dotavious)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)
+[![CI](https://github.com/doctavious/dotavious/workflows/CI/badge.svg)](https://github.com/doctavious/dotavious/actions?query=workflow%3ACI)
 
+A library for generating [Graphviz](https://graphviz.org/) [DOT](https://graphviz.org/doc/info/lang.html) language files 
+for visualizing graphs.
 
-## Research 
+## Constraints / Limitations
 
-- https://github.com/HongxuChen/dot-rs/blob/master/src/lib.rs
-- https://github.com/lk-chen/dot_parse-rust
-- https://github.com/dylanowen/mdbook-graphviz
-- https://github.com/petgraph/petgraph/blob/master/src/dot.rs
+- Not every Attribute is fully documented/described. 
+  However, all those which have specific allowed values should be covered. 
+- Deprecated Attributes are not defined.
 
 
-I'm not in love with this API design. Will work on building an alternative and see how it goes
-Read https://graphviz.org/doc/info/lang.html
+## Quickstart
 
-https://www.graphviz.org/pdf/dotguide.pdf
\ No newline at end of file
+```rust
+use dotavious::{Dot, Edge, Graph, GraphBuilder, Node};
+use std::io;
+use std::io::Read;
+
+// can also start building a undirected graph via `GraphBuilder::new_undirected`
+let graph = GraphBuilder::new_directed(Some("example".to_string()))
+        .add_node(Node::new("N0".to_string()))
+        .add_node(Node::new("N1".to_string()))
+        .add_edge(Edge::new("N0".to_string(), "N1".to_string()))
+        .build()
+        .unwrap();
+
+let dot = Dot { graph };
+println!("{}", dot);
+```
+which produces
+```
+digraph example {
+    N0;
+    N1;
+    N0 -> N1;
+}
+```
+and when rendered will look like
+![README example rendered](readme-example.png?raw=true)
diff --git a/example.dot b/example.dot
new file mode 100644
index 0000000..53a536a
--- /dev/null
+++ b/example.dot
@@ -0,0 +1,5 @@
+digraph example {
+    N0;
+    N1;
+    N0 -> N1;
+}
diff --git a/readme-example.png b/readme-example.png
new file mode 100644
index 0000000..63d3c28
--- /dev/null
+++ b/readme-example.png