Various minor improvements and cleanups

This reduces the code size by about 500 bytes (e.g. TypeD_REV example
for me went from 5242 to 4738 bytes, a saving of about 10%)

* move the PROTOCOL3_ #defines from .h to .c and turn them into enums
  (debugging enums is easier than #defines)
* add sync factor constants for protocols 1 and 2
* use the PROTOCOL* constants in more places

Fixes some typos, and wraps it for readability

These help to catch bugs, and also can sometimes help the compiler
optimize the code

Solution for issue #14, reduced the cut-off/ignore time limit

Lidl sockets basic

Sensible encoding

Added a readme 

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Reverse merged revision(s) 133 from trunk:
arduino 1.0 compatibility
- renamed example files from *.pdo to *.ino
........

- renamed example files from *.pdo to *.ino