removed phantomjs-based print-pdf plugin

plugin/print-pdf/print-pdf.js

-/**
- * phantomjs script for printing presentations to PDF.
- *
- * Example:
- * phantomjs print-pdf.js "http://revealjs.com?print-pdf" reveal-demo.pdf
- *
- * @author Manuel Bieh (https://github.com/manuelbieh)
- * @author Hakim El Hattab (https://github.com/hakimel)
- * @author Manuel Riezebosch (https://github.com/riezebosch)
- */
-
-// html2pdf.js
-var system = require( 'system' );
-
-var probePage = new WebPage();
-var printPage = new WebPage();
-
-var inputFile = system.args[1] || 'index.html?print-pdf';
-var outputFile = system.args[2] || 'slides.pdf';
-
-if( outputFile.match( /\.pdf$/gi ) === null ) {
-	outputFile += '.pdf';
-}
-
-console.log( 'Export PDF: Reading reveal.js config [1/4]' );
-
-probePage.open( inputFile, function( status ) {
-
-	console.log( 'Export PDF: Preparing print layout [2/4]' );
-
-	var config = probePage.evaluate( function() {
-		return Reveal.getConfig();
-	} );
-
-	if( config ) {
-
-		printPage.paperSize = {
-			width: Math.floor( config.width * ( 1 + config.margin ) ),
-			height: Math.floor( config.height * ( 1 + config.margin ) ),
-			border: 0
-		};
-
-		printPage.open( inputFile, function( status ) {
-			console.log( 'Export PDF: Preparing pdf [3/4]')
-			printPage.evaluate( function() {
-				Reveal.isReady() ? window.callPhantom() : Reveal.on( 'pdf-ready', window.callPhantom );
-			} );
-		} );
-
-		printPage.onCallback = function( data ) {
-			// For some reason we need to "jump the queue" for syntax highlighting to work.
-			// See: http://stackoverflow.com/a/3580132/129269
-			setTimeout( function() {
-				console.log( 'Export PDF: Writing file [4/4]' );
-				printPage.render( outputFile );
-				console.log( 'Export PDF: Finished successfully!' );
-				phantom.exit();
-			}, 0 );
-		};
-	}
-	else {
-
-		console.log( 'Export PDF: Unable to read reveal.js config. Make sure the input address points to a reveal.js page.' );
-		phantom.exit( 1 );
-
-	}
-} );