Merge pull request #47 from jeff1evesque/doc_overview

#46: Fix minor typos in 'Overview' subsection
#48: input.txt, delete file
Merge pull request #49 from jeff1evesque/txt_input

#48: input.txt, delete file
#50: README.md, update 'Execution' subsection
Merge pull request #51 from jeff1evesque/doc_execution

#50: README.md, update 'Execution' subsection
#50: README.md, change 'input.txt' -> 'given/input.txt'
#50: README.md, change 'observation.log' -> 'log/observation.log'
Merge pull request #52 from jeff1evesque/doc_execution

#50: Documentation - fix file references
#46: README.md, fix minor typo in 'Overview' subsection