Removed Travis-CI references from all examples.

 Regular users are not affected by test scripts/makefiles - no new includes or *.mk files outside of the tests/ directory. Fixes #258 

Added makefile and gcc version info to config output.

Tested on Arduino 1.0.6:
```
- [AUTODETECTED]       ARDUINO_VERSION = 106 
- [COMPUTED]           ARDMK_VERSION = 1.3.4 
- [COMPUTED]           CC_VERSION = 4.3.2 (avr-gcc)
```
Examples build locally and on travis-ci now - including chipkit:
```
- [USER]               ARDUINO_VERSION = 23 
- [COMPUTED]           ARDMK_VERSION = 1.3.4 
- [COMPUTED]           CC_VERSION = 4.5.1 (pic32-gcc)
```
:+1: