Improve anaconda build process.

Anaconda build was broken due to local files containing third party
projects.

Summary of Changes:

1. Build recipe from GitHub master branch instead of local path

2. Move anaconda recipe to a separate folder to avoid including
unintended large files in the build

3. Update Makefile to work with the current file structure

bump version to 0.0.5

add scipy to host environment

bump version to 0.0.3

Improve conda installation

Use both lijunzhu and pytorch channels.

add pip support