[develop/features]

- Added some new source files
- Renamed some original files
- Modified README.md
[develop/features]

- Modified README.md
[develop/features]

- Modified README.md
[develop/features]

- Modified game engine Neve and added samples to project.
[master]

- Merge branch 'develop/features'
- Original Angle, modified its structure and some sources.
- This is the base of Neve, more features and further works will be added.
- Current version is 0.0.0.1_a