Upgrade testrpc-sc to 6.1.6, add doc notes

docs/testrpc-sc.md

@@ -12,9 +12,18 @@ Warning: this is a birds nest. Any ideas for improvement, however small, are wel
 To publish a new version:
 
 ```
+$ git checkout develop
+$ git pull upstream develop
 $ git checkout coverage
+$ git rebase develop
+
+> Update your ganache-core hash
+> NOTE TO CGEWECKE: MAKE SURE YOU RENAMED THE PACKAGE (and the .bin command)!!!!
+> OTHERWISE YOU WILL PUBLISH OVER THE REAL GANACHE-CLI
+>
+
 $ rm -rf node_modules
-$ yarn install
+$ yarn install        // This step seems to be absolutely necessary.
 $ npm run build       // Check build, just to make sure
 $ npm version patch   // If helpful. If you're tracking the upstream with a ganache-core sync, use theirs.
 $ git push

package.json

@@ -22,7 +22,7 @@
   "license": "ISC",
   "dependencies": {
     "death": "^1.1.0",
-    "ethereumjs-testrpc-sc": "6.1.2",
+    "ethereumjs-testrpc-sc": "6.1.6",
     "istanbul": "^0.4.5",
     "keccakjs": "^0.2.1",
     "req-cwd": "^1.0.1",