Merge pull request #124 from jeff1evesque/doc_overview_typo

#123: fix slight typo in 'Overview' section
Merge pull request #125 from jeff1evesque/doc_overview_typo

#123: restructure 'Overview' paragraph
#126: Add Pre-Installation section
#126: Remove unnecessary reference to subsections
Merge pull request #127 from jeff1evesque/doc_pre_installation

#126 - Documentation: Add Pre-Installation section
#128: directory permission on 'audio'
#128: change 'audio' directory permission to 'www-data:admin'
Merge pull request #129 from jeff1evesque/doc_file_permission

#128: Documentation - directory permission on 'audio'
#80: create 'recording-converted' directory before saving there
Merge pull request #130 from jeff1evesque/create_recording_dir

#80: create 'recording-converted' directory before saving there
#131: consistent spacing and comments
Merge pull request #132 from jeff1evesque/bash_consistency

#131: consistent spacing and comments
#133: change 'audio.wav.wav' -> 'audio.wav'
Merge pull request #134 from jeff1evesque/fix_reformatted_filename

#133: change 'audio.wav.wav' -> 'audio.wav'
#133: create directory before inotify while loop
Merge pull request #137 from jeff1evesque/bash_execute_all

#133: create directory before inotify while loop
#135: create directory before inotify while loop
#135: record last execution in 'log_bash' and execute only once
#135: properly execute all bash-scripts in 'audio' subdirectory
#135: add comment on recorded-trace 'haystack' array variable