Add Codacy code quality badge to README

README.md

@@ -6,7 +6,7 @@ It uses the Arduino Core for ESP8266 framework and a number of 3rd party librari
 [![version](https://img.shields.io/badge/version-1.12.4a-brightgreen.svg)](CHANGELOG.md)
 ![branch](https://img.shields.io/badge/branch-dev-orange.svg)
 [![travis](https://travis-ci.org/xoseperez/espurna.svg?branch=dev)](https://travis-ci.org/xoseperez/espurna)
-[![license](https://img.shields.io/github/license/xoseperez/espurna.svg)](LICENSE)
+[![codacy](https://img.shields.io/codacy/grade/c9496e25cf07434cba786b462cb15f49/dev.svg)](https://www.codacy.com/app/xoseperez/espurna/dashboard)[![license](https://img.shields.io/github/license/xoseperez/espurna.svg)](LICENSE)
 [![donate](https://img.shields.io/badge/donate-PayPal-blue.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=xose%2eperez%40gmail%2ecom&lc=US&no_note=0&currency_code=EUR&bn=PP%2dDonationsBF%3abtn_donate_LG%2egif%3aNonHostedGuest)
 [![twitter](https://img.shields.io/twitter/follow/xoseperez.svg?style=social)](https://twitter.com/intent/follow?screen_name=xoseperez)
 

pre-commit

@@ -52,6 +52,14 @@ travis = "[![travis](https://travis-ci.org/{USER}/{REPO}.svg?branch={BRANCH})]"
     BRANCH = BRANCH
 )
 
+codacy = "[![codacy](https://img.shields.io/codacy/grade/{HASH}/{BRANCH}.svg)]" \
+    "(https://www.codacy.com/app/{USER}/{REPO}/dashboard)".format(
+    HASH = "c9496e25cf07434cba786b462cb15f49",
+    USER = USER,
+    REPO = REPO,
+    BRANCH = BRANCH
+)
+
 lines = open(README).readlines()
 with open(README, "w") as fh:
     for line in lines:
@@ -61,6 +69,8 @@ with open(README, "w") as fh:
             fh.write(version)
         elif "![branch]" in line:
             fh.write(branch)
+        elif "![codacy]" in line:
+            fh.write(codacy)
         else:
             fh.write(line)