chore(*): add runkit example

closes #18

Author: sanjayaksaxena

package.json

@@ -48,5 +48,6 @@
     "nyc": "^15.1.0",
     "mocha": "^8.2.1"
   },
+  "runkitExampleFilename": "./runkit-example.js",
   "dependencies": {}
 }

runkit-example.js

@@ -0,0 +1,20 @@
+const winkNLP = require( 'wink-nlp' );
+const its = require( 'wink-nlp/src/its.js' );
+// Use web model for RunKit.
+const model = require( 'wink-eng-lite-web-model' );
+const nlp = winkNLP( model );
+
+const text = 'Its quarterly profits jumped 76% to $1.13 billion for the three months to December, from $639million of previous year.';
+const doc = nlp.readDoc( text );
+// Print tokens.
+console.log( doc.tokens().out() );
+// Print each token's type.
+console.log( doc.tokens().out( its.type ) );
+// Print details of each entity.
+console.log( doc.entities().out( its.detail ) );
+// Markup entities along with their type for highlighting them in the text.
+doc.entities().each( ( e ) => {
+  e.markup( '<mark>', `<sub style="font-weight:900"> ${e.out(its.type)}</sub></mark>` );
+} );
+// Render them as HTML via RunKit
+doc.out( its.markedUpText );