Merge branch '16-add-display_data-output-type-for-jupyter-notebooks' into 'master'

Resolve "Add display_data output type for jupyter notebooks"

Closes #16

See merge request !9

src/input_types/ipynb.rs

@@ -254,7 +254,7 @@ impl Display for RawCell {
 pub enum Output {
     #[serde(rename = "execute_result")]
     Execute(ExecuteResult),
-    #[serde(rename = "display_result")]
+    #[serde(rename = "display_data")]
     Display(DisplayData),
     #[serde(rename = "stream")]
     Stream(Stream),