Fix double words
Fix a couple typos
Add .editorconfig file to define a recommended format
Merge pull request #8 from jtwalters/typos

Fix double words
Merge pull request #9 from jtwalters/typos2

Fix a couple typos
Merge pull request #11 from jtwalters/editorconfig

Add .editorconfig file to define a recommended format
Fix inconsistent whitespace (indentation should be two spaces)
Merge pull request #12 from jtwalters/whitespace2

Fix inconsistent whitespace (indentation should be two spaces)
Closes #10
removes repeated browsers and corrects spelling of patterns
Merge pull request #13 from rabellamy/spelling-grammar

corrects spelling of patterns in #pair-design
Table of Contents to a primary section