Added levels prices as new element of ASBOX.
The fulfill script generate auction-based scenarios.

Several auction-related parameters are added to the 'fulfill' script, which generates scenarios to be simulated.

It can be specified:
 - The minimum and maxium prices the can be associated to a level.
 - The schedule with roles that are adopted by each ASBox during the simulation.
Bug fixed: Added methods to the UserPreferences.

Added methods for setting and getting the prices associated to each level. The last commit lacks implementation of these methods.
Added GLM containing schedules for the auction-related simulations.
Modified 'gitignore' in order to discard temporal resources.
Added the Report script.

The script analyzes the log files and draws statistics from them.
Allow comment lines in the CSV file.

The comment lines must start wit the character '#'. Once it is detected, whole content of the line is ignored.
Format the number corresponding to the offer Provided.
Added the number of nodes to the report.
Bug fixed: Calculation of the overbookers.

The overbookers weren't being detected. It was due to the usage of the total results instead of the node results.
Added global variables (DF y OF) to the command line.

Now, the number of directory facilitators and Overbooking factor can be
specified through the command line by defining the global variables:

 - df: number of directory facilitators, and
 - of: overbooking factor.
 
gridlabd file.gml --define df=1 --define of=2.0