Update README.md
file upload
rename prim.py -> primitives.py
ByteIO.write only accept byte type
move requirement checking backward.
add base of err data
rework parsing
add validation
remove DictGetter

add it back when spec 2.0 is ready
refactoring, make code easier to understand
Update README.md

add SwaggerApp.validate
bump version
forget to bump another version
sync version bumping
initialize Sphinx
comments
Merge branch 'docs' of https://github.com/AntXlab/pyswagger into docs