Highcharts & Highstock links in INSTALL.md are broken

[evz]

Setting this app up (again) in preparation for getting together tomorrow and noticed that if you attempt to download Highcharts from the URL provided in INSTALL.md it returns a 404. This is probably because they are on version 3.0.5 now and the link in INSTALL.md points to 3.0.1. Same thing goes for HighStock, which is now at version 1.3.5. The way to point your download to a particular version, which seems like the sane approach, is to get it from http://code.highcharts.com any build the URL thusly:

http://code.highcharts.com/3.0.1/highcharts.js http://code.highcharts.com/stock/1.2.4/highstock.js

You can also build it so that it gets the latest stable release in that version by leaving off he last point:

http://code.highcharts.com/3.0/highcharts.js # gets 3.0.5 http://code.highcharts.com/stock/1.2/highstock.js # gets 1.2.5

At any rate, we should probably fix the instructions so that the URL there works.