Removed a reference to the journal example - should be html example.
Fixed small typos.
Made the branch names bold.
Merge pull request #83 from marioa/2013-05-oxford-dtc

2013 05 oxford dtc
Made some text bold.
Minor changes.
Added an example of finite arithmetic problems.
Merge pull request #84 from marioa/2013-05-oxford-dtc

2013 05 oxford dtc
A better merge of the welcome slides - I missed one of Mario's changes.
Merge branch '2013-05-oxford-dtc' of https://github.com/swcarpentry/boot-camps into 2013-05-oxford-dtc
Fix a few typos and final tweaks to Matlab session.
Fix formatting and add link to more scipy lecture notes.