Add support for symbol name and instruction size

Detect address at given symbol and the size of instruction at that address
Offset can also be added to the symbol
Merge pull request #1 from tuxology/cosmetics

Add methods to get symbol address and instruction size
Minor cosmetic changes
Merge pull request #2 from tuxology/cosmetics

Minor cosmetic changes
Update gitignore
Restructure source tree, won't compile
Make it compile
Clean up code