add github pages build configuration
add github pages build configuration

codenvy/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy,codenvy/codenvy,R-Brain/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy,codenvy/codenvy,codenvy/codenvy,R-Brain/codenvy