Bump version to 1.1
build.sh: Add snippets directory.
setup.py: Remove spurious +".1" version suffix
setup.py: Depend on flake8 >= 2.0
ropebackend, refactor: Do not creacte .ropeproject folder.

This folder tended to clutter projects, and I never used it. Elpy
now by default does not create this folder. If this causes problem
for some, we can add a variable to make it optional.

Closes #127