Add sonar badges in README.md (#84)

* Replace istanbul by nyc
* Add sonar badges
* Update eslint dependencies, replace istanbul by nyc, update npm start and cover

Author: steven-heng

.gitignore

@@ -3,3 +3,4 @@ coverage
 docs
 .idea/
 package-lock.json
+.nyc_output

.jshintignore

@@ -1,3 +1,4 @@
 coverage/
 node_modules/
 docs/
+.nyc_output/

README.md

@@ -1,7 +1,13 @@
 Node Cache Manager store for Redis
 ==================================
 
-[![Codacy Badge](https://api.codacy.com/project/badge/grade/3d5933f95c88472d9075dc302c8d62e1)](https://www.codacy.com/app/dialonce-jkernech/node-cache-manager-redis) [![Codacy Badge](https://api.codacy.com/project/badge/coverage/3d5933f95c88472d9075dc302c8d62e1)](https://www.codacy.com/app/dialonce-jkernech/node-cache-manager-redis) [![Dependency Status](https://david-dm.org/dial-once/node-cache-manager-redis.svg)](https://david-dm.org/dial-once/node-cache-manager-redis)
+(https://david-dm.org/dial-once/node-cache-manager-redis.svg)](https://david-dm.org/dial-once/node-cache-manager-redis)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/gate?key=node-cache-manager-redis)](http://sonar.dialonce.net/dashboard?id=node-cache-manager-redis)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=ncloc)](http://sonar.dialonce.net/dashboard?id=node-cache-manager-redis)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=coverage)](http://sonar.dialonce.net/dashboard?id=node-cache-manager-redis)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=code_smells)](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=coverage)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=bugs)](http://sonar.dialonce.net/dashboard?id=node-cache-manager-redis)
+[![Sonar](http://proxy.dialonce.net/sonar/api/badges/measure?key=node-cache-manager-redis&metric=sqale_debt_ratio)](http://sonar.dialonce.net/dashboard?id=node-cache-manager-redis)
 
 The Redis store for the [node-cache-manager](https://github.com/BryanDonovan/node-cache-manager) module.
 
@@ -99,11 +105,11 @@ redisCache.set('foo', 'bar', function () {
         redisCache.keys('fo*', function (err, arrayOfKeys) {
             // arrayOfKeys: ['foo']
         });
-        
+
         redisCache.keys(function (err, arrayOfKeys) {
             // arrayOfKeys: ['foo', 'far']
         });
-        
+
         redisCache.keys('fa*', { scanCount: 10 }, function (err, arrayOfKeys) {
             // arrayOfKeys: ['far']
         });
@@ -200,9 +206,9 @@ redisCache.set('foo', 'bar', { compress: false }, function(err) {
     });
 });
 
-// Setting the compress option to true will enable a default configuration 
-// for best speed using gzip. For advanced use, a configuration object may 
-// also be passed with implementation-specific parameters. Currently, only 
+// Setting the compress option to true will enable a default configuration
+// for best speed using gzip. For advanced use, a configuration object may
+// also be passed with implementation-specific parameters. Currently, only
 // the built-in zlib/gzip implementation is supported.
 var zlib = require('zlib');
 var redisCache = cacheManager.caching({
@@ -216,7 +222,7 @@ var redisCache = cacheManager.caching({
 	  type: 'gzip',
 	  params: {
 	    level: zlib.Z_BEST_COMPRESSION
-	  } 
+	  }
 	}
 });
 ```

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "node_modules/.bin/mocha --recursive test --exit",
-    "coverage": "node_modules/.bin/istanbul cover _mocha -- test --recursive --exit",
+    "cover": "CONSOLE_LOGGING=false ./node_modules/.bin/nyc --reporter=lcov ./node_modules/.bin/_mocha test --recursive --timeout=10000 --exit",
     "lint": "npm bin jshint .",
     "jsdoc": "node_modules/.bin/jsdoc . --package package.json --readme README.md --template node_modules/minami --destination docs"
   },
@@ -27,11 +27,11 @@
     "sol-redis-pool": "^0.3.2"
   },
   "devDependencies": {
-    "istanbul": "^0.4.0",
+    "mocha": "^5.2.0",
+    "nyc": "^12.0.2",
     "jsdoc": "^3.3.3",
     "jshint": "^2.8.0",
     "minami": "^1.1.1",
-    "mocha": "^5.2.0",
     "sinon": "^1.17.2"
   }
 }