Add Codacy badge (#9)

codacy-badger · web-flow · commit a1a8c4ac0473 · 2021-05-31T16:52:37.000+09:00
diff --git a/README.md b/README.md
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+# Python-HTML-Parser
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/ca00dac3dd2342a79f930e286bcd5286)](https://app.codacy.com/gh/Hepheir/Python-HTML-Parser?utm_source=github.com&utm_medium=referral&utm_content=Hepheir/Python-HTML-Parser&utm_campaign=Badge_Grade_Settings)

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`@@ -0,0 +1,2 @@`
	`1`	`+# Python-HTML-Parser`
	`2`	`+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/ca00dac3dd2342a79f930e286bcd5286)](https://app.codacy.com/gh/Hepheir/Python-HTML-Parser?utm_source=github.com&utm_medium=referral&utm_content=Hepheir/Python-HTML-Parser&utm_campaign=Badge_Grade_Settings)`