Move asm.js module out of prototype
Remove buster and benchmark devDependencies for now

Having some trouble with dependencies:
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/ramp/node_modules/ramp-resources requires lodash@'~0.5' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/lodash,
npm WARN unmet dependency which is version 1.0.1
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/buster-cli/node_modules/buster-configuration/node_modules/ramp-resources requires glob@'~3.2.6' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/buster-cli/node_modules/buster-configuration/node_modules/glob,
npm WARN unmet dependency which is version 3.1.21
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/buster-cli/node_modules/buster-configuration/node_modules/ramp-resources requires minimatch@'~0.1.5' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/buster-cli/node_modules/minimatch,
npm WARN unmet dependency which is version 0.2.14
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-test-cli/node_modules/buster-cli/node_modules/buster-configuration/node_modules/ramp-resources requires lodash@'~0.5' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/lodash,
npm WARN unmet dependency which is version 1.0.1
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-server-cli/node_modules/ramp-resources requires lodash@'~0.5' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/lodash,
npm WARN unmet dependency which is version 1.0.1
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/buster-static/node_modules/ramp-resources requires lodash@'~0.5' but will load
npm WARN unmet dependency /node_modules/simplex-noise/node_modules/buster/node_modules/lodash,
npm WARN unmet dependency which is version 1.0.1
Merge branch 'asm'