Fix for issue #204, added width option to the CLI. Default value for width is 1200.

Added logger using es6 syntax

lib/phantomscript.js

@@ -30,8 +30,14 @@ var system = require('system')
 
 
 var page = webpage.create()
-  , files = phantom.args.slice(7, phantom.args.length)
-  , options = {
+  , files = phantom.args.slice(8, phantom.args.length)
+  , width = phantom.args[7]
+
+if(typeof width === 'undefined'){
+  width = 1200;
+}
+
+var options = {
         outputDir: phantom.args[0]
       , png: phantom.args[1] === 'true' ? true : false
       , svg: phantom.args[2] === 'true' ? true : false
@@ -39,6 +45,7 @@ var page = webpage.create()
       , sequenceConfig: phantom.args[4]
       , ganttConfig: phantom.args[5]
       , verbose: phantom.args[6] === 'true' ? true : false
+      , width: width
     }
   , log = logger(options.verbose)
 
@@ -80,7 +87,8 @@ files.forEach(function(file) {
   svgContent = page.evaluate(executeInPage, {
     contents       : contents,
     ganttConfig    : options.ganttConfig,
-    sequenceConfig : options.sequenceConfig
+    sequenceConfig : options.sequenceConfig,
+    confWidth      : options.width
   })
   oDOM = oParser.parseFromString(svgContent, "text/xml")
 
@@ -213,6 +221,7 @@ function executeInPage(data) {
     , boundingBox
     , width
     , height
+    , confWidth = data.confWidth
 
   toRemove = document.getElementsByClassName('mermaid')
   if (toRemove && toRemove.length) {
@@ -257,7 +266,8 @@ function executeInPage(data) {
         document.body.appendChild(sc)
     }
 
-
+  //console.log(document.head.innerHTML);
+  //console.log(document.body.innerHTML);
   mermaid.init();
 
   svg = document.querySelector('svg')
@@ -266,25 +276,27 @@ function executeInPage(data) {
   width = boundingBox.width * 1.5; // adding the scale factor for consistency with output in chrome browser
   height = boundingBox.height * 1.5; // adding the scale factor for consistency with output in chrome browser
 
+  var scalefactor = confWidth/(width-8);
+
   // resizing the body to fit the svg
   document.body.setAttribute(
     'style'
-    , 'width: ' + width + '; height: ' + height + ';'
+    , 'width: ' + (confWidth-8) + '; height: ' + (height*scalefactor) + ';'
   )
   // resizing the svg via css for consistent display
   svg.setAttribute(
     'style'
-    , 'width: ' + width + '; height: ' + height + ';'
+    , 'width: ' + (confWidth-8) + '; height: ' + (height*scalefactor) + ';'
   )
 
   // set witdth and height attributes used to set the viewport when rending png image
   svg.setAttribute(
     'width'
-    , width
+    , confWidth
   )
   svg.setAttribute(
     'height'
-    , height
+    , height*scalefactor
   )
 
   svgValue = xmlSerializer.serializeToString(svg)