Merge pull request #2 from callumlocke/master

also accept full URL when prompting for Bertha spreadsheet ID
Introduce `app.config` as a place to store the type of globals that are not in the bertha sheet. In this case we have just started off with a selector to the root element for the interactive.
Fix typo in readme.
Fix handlebars help issues.
Merge branch 'master' of https://github.com/ft-interactive/generator-ig-job
Removing Handlebars examples from the code. Going to be transfered to examples in the README.md
Cleaning up last piece of Handlebars example.
Only inclue the hidden class on the body when the there is bertha data being loaded.
Delete todo.md because we are using Github issues now.
Change globbing on images paths to include any amount of sub-directories.
Fixing JSHint issues and improving comments.