Minor formatting and grammar changes
Clarified some instructions and tidied up the grammar in places.
Minor formatting and capitalisation changes.
More capitalisation changes.
Changed AWS CLI set up instructions to use 'aws configure' tool rather than a manually-created text file.
Minor formatting and grammar changes.
Tidied up heading hierarchy.
Fixed link to CloudFormation template documentation.
Merge pull request #5 from charleskorn/master

Minor formatting and grammar changes and clarifications for parts 1 and 2