Updated test files added Seven segment controllers
added devtest project
add wavstream
moved seven segment files into devtest
moved led test files
removed seven segment project (moved into devtest)
added mcp3008 controllers
Refactored MCP3008 interfaces to be named correctly, added ADS1015 controllers
fixed comments in IMCP3008
refactored MCP3008 controllers differentiate between single and differential reads
Added support for differential reads to MCP3008
refreshing project