fix typo: scenarious -> scenarios
add missing pronoun
correct verb forms
remove superfluous 'are'
fix typo: understanable->understandable
remove superfluous 'the'
add two missing 'the's
fix verb form and add pronoun
fix ordering of words and add necessary 'the's
fix preposition 'in' to 'on'
add 'a' and 'the' appropriately
fix verb form: 'contain' -> 'contains'
add missing 'a' and fix 'in' to 'on'
Merge pull request #33 from nookieman/typo_fixes

Typos and minor fixes