removing nominatim package
find_files_in_folder function now is iterator
some pep8 fixes
cli improvement
checking if paths are valid folders
class object inheritance removed
new separate File class, classes in new style
Merge branch 'classesimprovement' into develop

Conflicts:
	gpxseg.py
Fixes timezone problem with name creation
Fixes #1
Colors in output.
Fixes #3
~ in paths on output.
Fixes #2
pep8
Settings file(~/.gpxseg.pkl). Some rearragements.
Fixes #4
Version to 0.2