Update cheatsheets

spark

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# spark
+
+> The Laravel Spark command-line tool.
+> More information: <https://spark.laravel.com>.
+
+- Register your API token:
+
+`spark register {{token}}`
+
+- Display the currently registered API token:
+
+`spark token`
+
+- Create a new Spark project:
+
+`spark new {{project_name}}`
+
+- Create a new Spark project with Braintree stubs:
+
+`spark new {{project_name}} --braintree`
+
+- Create a new Spark project with team-based billing stubs:
+
+`spark new {{project_name}} --team-billing`