json5: add page (#2024)

pages/common/json5.md

@@ -0,0 +1,27 @@
+# json5
+
+> A command-line tool for converting JSON5 files to JSON.
+
+- Convert JSON5 stdin to JSON stdout:
+
+`echo {{input}} | json5`
+
+- Convert a JSON5 file to JSON and output to stdout:
+
+`json5 {{path/to/input_file.json5}}`
+
+- Convert a JSON5 file to the specified JSON file:
+
+`json5 {{path/to/input_file.json5}} --out-file {{path/to/output_file.json}}`
+
+- Validate a JSON5 file:
+
+`json5 {{path/to/input_file.json5}} --validate`
+
+- Specify the number of spaces to indent by (or "t" for tabs):
+
+`json5 --space {{indent_amount}}`
+
+- View available options:
+
+`json5 --help`