Updating the examples

[xpeqex]

Changes:

• Erase unnecessary long comments on the code.
• Better document and modify comments.
• Format the code so it looks more like the Arduino built-in examples.
• Combine both DMP6 and DMP6.12 examples, both were the same structure only the library definition changed.
• Update the Ethernet example from source repo, so now compiles.
• Add a short sequence to check the connection to the MPU6050 I2C, if there is no connection now it loops. Before, the code kept running, without an actual I2C connection.
• Update links to dependency libraries.
• Update processing teapot sketch.

[sabas1080]

@xpeqex esto no paso las pruebas unitarias revisar por favor

[xpeqex]

@sabas1080 listo, muchos typos en documentación y uno en el codigo 😟