update solidity-coverage to 0.2.2

package-lock.json

@@ -4912,7 +4912,7 @@
       }
     },
     "solidity-coverage": {
-      "version": "0.2.1",
+      "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/solidity-coverage/-/solidity-coverage-0.2.1.tgz",
       "integrity": "sha512-+vsgS3tMK4UyBiliIv1aE6PC+MfaLo/XQ0qzBlkaIuP2e/vw8Zn8pnzw2mYBmoImoSugsK3EuwslHgRQXQjCRw==",
       "dev": true,

package.json

@@ -37,7 +37,7 @@
     "coveralls": "^2.13.1",
     "ethereumjs-testrpc": "^4.1.1",
     "mocha-lcov-reporter": "^1.3.0",
-    "solidity-coverage": "^0.2.1",
+    "solidity-coverage": "^0.2.2",
     "truffle": "^3.4.6",
     "truffle-hdwallet-provider": "0.0.3"
   }

yarn.lock

@@ -3546,9 +3546,9 @@ solc@^0.4.2:
     semver "^5.3.0"
     yargs "^4.7.1"
 
-solidity-coverage@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/solidity-coverage/-/solidity-coverage-0.2.1.tgz#aa6fd8e7d49a6fcd1dc9913e9b61bc84f8ad046f"
+solidity-coverage@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/solidity-coverage/-/solidity-coverage-0.2.2.tgz#7bc1843f4f6a617db490ad2f11caff946df7bd13"
   dependencies:
     commander "^2.9.0"
     death "^1.1.0"