Create MAX4xxx0.js
Rename MAX4xxx0.js to MCP4xxx0.js

durrrr....
Create MCP4xxxSPI.md

Well, adapting the documentation sure was easy.
Update ULN2003.md

Added a couple more sentences about the COM pin - hopefully that would have prevented the confusion about it i saw in that thread. 

Also added a Caveats section to spare everyone the pain I went through when I discovered that "500ma/channel" didn't mean "500ma/channel, at up to 100% duty cycle on each of the 7 channels". 

Added Variants section to mention a few similar parts.
Create MCP4xxxSPI.js
Update ULN2003.md

Measured the voltage drop on a ULN2803 under 300ma load, added that bit of quantitative data.
Delete MCP4xxxSPI.js

Unifying I2C and SPI modules
Update and rename MCP4xxxI2C.js to MCP4xxx.js

Unified I2C and SPI modules.
Update MCP4xxx.js

Fix getStatus() for I2C parts.
Update and rename MCP4xxxI2C.md to MCP4xxx.md

Combine documentation.
Delete MCP4xxxSPI.md

combined into MCP4xxx.md
Update MCP4xxx0.js

Minor bugfixes
Update MCP4xxx.md
Create MCP4xxx0.md
Merge pull request #90 from SpenceKonde/master

Combine modules for I2C and SPI digipots, add MCP4xxx0 module