Add Docker Configurations and change directory structure

[metaVariable]

Add "Dockerfiles" directory for Docker Configurations

• Dockerfiles/README.md
• Dockerfiles/Dockerfile (cpu, gpu, mpi) for Docker build
• Dockerfiles/Makefile (cpu, gpu, mpi) for Configuration

Add "doc" directory for documentations

• move&rename "BUILD" into "doc"-dir, and change to markdown format
• move&rename "README" into "doc"-dir, and change to markdown format

Add "data" directory for examles

• *.pdb, SAMPLE.table, HOSTS