Update + Improve NewEEPROM library/examples

[phillipjohnston]

• [x] Eliminate warnings
• [x] Better serial output for demo files
• [x] Better usage notes
• [x] Update EEPROM library and port "patched" changes to it
• [x] Rename NewEEPROM to AriadneEEPROM

[phillipjohnston]

Update not needed. Rename will happen in #13.