Chart widths responding to window resize.
Moved window resize event subscription to Chart init function.
Resizing chart width taking margin into account.
Removed console.log debugging.
Tidied Chart constructor and using container offsetLeft instead of chartSVG offestLeft when calculating chart width on window resize
Fixed bug where x position of markers is not correct after resizing the chart's width.
Merge pull request #90 from niksoper/master

Resizing chart width with window.