fix solc version

Author: iurimatias

package.json

@@ -67,6 +67,7 @@
     "request": "^2.85.0",
     "serve-static": "^1.11.1",
     "shelljs": "^0.5.0",
+    "solc": "0.4.24",
     "simples": "^0.8.8",
     "string-replace-async": "^1.2.1",
     "style-loader": "^0.19.0",

test/contracts.js

@@ -58,7 +58,7 @@ describe('embark.Contracts', function() {
     let contractsConfig = {
       "versions": {
         "web3.js": "1.0.0-beta",
-        "solc": "0.4.17"
+        "solc": "0.4.24"
       },
       "deployment": {
         "host": "localhost",
@@ -167,7 +167,7 @@ describe('embark.Contracts', function() {
     let contractsConfig = {
       "versions": {
         "web3.js": "1.0.0-beta",
-        "solc": "0.4.17"
+        "solc": "0.4.24"
       },
       "deployment": {
         "host": "localhost",