Documents --target and updates possible compile platforms documentation. (#268)
Documents --target and updates possible compile platforms documentation. (#268)

* Add all compile targets with aliases

* Documents the --target argument. Closes #204

* Small typo

kennethlimcp/particle-cli,spark/particle-cli,kennethlimcp/particle-cli,spark/particle-cli,kennethlimcp/particle-cli,kennethlimcp/particle-cli,spark/particle-cli,kennethlimcp/particle-cli,spark/particle-cli,spark/particle-cli,spark/particle-cli,kennethlimcp/particle-cli