Add json-simple as a json parser in pom.xml

Instance Parser and tested (need unit test)
correct json instance
Use Dimensions as a description of sizes

Improve test
Add JUnit Test on JSonParser

Add 2 instances for testing
remove gson lib
remove inconsistency in sizes (use map insteand of array)
Merge pull request #4 from aeolus-project/parser-json

Parser json