chore(config): update configuration that are exposed and update readme

update configuration that are exposed and update readme

chore(): fix failing test for ionic serve.

chore(config): add swtoolbox to copy (ionic-team#560)

refactor(tests): export taskinfo from uglifyjs to fix test

export taskinfo from uglifyjs to fix test

refactor(configuration): don't expose constants as configuration

don't expose constants as configuration

refactor(webpack): json-loader instead of json

json-loader instead of json

fix(errors): skip HTTP errors

fix(serve): open browser to localhost

open browser to localhost

fix(rollup): removing rollup metadata prefix for paths

removing rollup metadata prefix for paths

chore(readme): add link to code of conduct

add link to code of conduct