Merge pull request #30 from jeff1evesque/doc_usb_system_partition

#21: Add 'USB System Partition' Subsection
#31: README.md, rename subsection to 'SD Boot Partition'
#31: README.md, minor language changes
#31: README.md, minor language changes
#31: README.md, minor language changes
Merge pull request #32 from jeff1evesque/doc_sd_boot_partition

#31: Rename 'SD Card' Subsection
#24: README.md, add 'MySQL Database' subsection
#24: README.md, add additional 'note'
#24: README.md, link text
#24: README.md, minor language change
#24: README.md, minor language change
#24: README.md, minor language changes
#24: README.md, mention 'MariaDB' upgrade possibility
#24: README.md, minor language change
Merge pull request #33 from jeff1evesque/doc_mysql_database

#24: Add 'MySQL Database' Subsection
#34: README.md, move 'MySQL Database' subsection to wiki page
Merge pull request #35 from jeff1evesque/doc_mysql_database

#34: README.md, move 'MySQL Database' subsection to wiki page
#13: README.md, initial description of IP address
#13: README.md, minor language changes
#13: README.md, further instructions on static IP