Debug

Hi, three propositions for debugging and enhancement,

1) modified SAT_AppStorage for clarifying the role of the "end" argument and corrected the loop for sending chunks of data via the CommLayer
2) placed SAT_Accel_Example.ino within a directory "SAT_Accel_Example" to be accessible through Arduino IDE (necessary to find a .ino file within a directory of the same name)
3) proposed to add getRawValue() functions to SAT_TMP and SAT_InfraTherm to avoid post-processing (get only short int values, and post-process the data once downloaded on earth) ^^