Add etherscan verifier and remove embarkArtifacts

.gitignore

@@ -8,6 +8,9 @@ node_modules
 package-lock.json
 dist
 full-build
+full-build.zip
+flattenedContracts
+src/embarkArtifacts
 
 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 

embark.json

@@ -12,6 +12,7 @@
   "plugins": {
     "embark-solium": {},
     "embarkjs-connector-web3": {},
+    "embark-etherscan-verifier": {},
     "@trailofbits/embark-contract-info": {
       "flags": ""
     }

package.json

@@ -14,6 +14,7 @@
     "debounce": "^1.2.0",
     "decimal.js": "^10.0.2",
     "embark": "4.0.2",
+    "embark-etherscan-verifier": "^4.0.0",
     "embark-solium": "0.0.1",
     "history": "^4.7.2",
     "idb": "4.0.3",