Started adding support for multiple extensions bundling in configuration
and compiler.
Added preliminary support for extension bundle debugging and packaging.
Improved check for missing extension manifest.
Improved check for missing bundle manifest.
.debug file is now generated correctly when debugging multiple
extensions. Debug port can be configured using the "launch.hostPort"
option.
Updated readme.
Removed author_name from extension configuration and updated readme.
Merge pull request #1 from fcamarlinghi/multiple-extension-support

Multiple extension support