Adds new verify contracts script

.gitignore

@@ -2,3 +2,7 @@ node_modules
 .env
 db
 .vscode
+abis
+verify.js.map
+verify.js
+flattened.*.sol

Verify.md

@@ -0,0 +1,89 @@
+# Verify Contracts
+
+For each contract whose address appears in migration.json (and therefore is a "migrated contract") we send the contract's solidity code to etherscan.io which will attempt to "verify" that the given code corresponds to the bytecodes deployed at the address given in migration.json.
+
+**Note** Contract validation via this script currently does not work on Windows (truffle-flattener generates invalid flattened .sol files).  The fix for that is at this writing in PR at truffle-flattener.
+
+## Setup
+1. In the project root, create an ".env" file (or use the existing one) that contains:
+```
+APIKEY=[API key from https://etherscan.io/myapikey]
+```
+
+Alternately you can supply this as an OS environment variable when you run `build.verify`.
+
+2. initialize just one time, required by `build.verify`:
+
+```script
+npm run verify.initialize
+```
+
+3. build just one time or whenever you modify verify.ts, required by `verify`:
+
+```script
+npm run verify.build
+```
+
+## Verify
+
+### Verify all of the contracts migrated to the given network
+
+```script
+npm run verify -- -p [provider url] -n kovan
+```
+
+### Verify all of the contracts of a specific Arc version migrated to the given network
+
+```script
+npm run verify -- -p [provider url] -n kovan -v 0.0.1-rc.18
+```
+
+The default Arc version is the last version listed in the migration.json file for the given network.
+
+### Verify a single scheme
+
+```script
+npm run verify -- -c UpgradeScheme -p [provider url] -n kovan
+```
+
+Outputs a GUID that you can use with `npm run verify -- -g`.
+
+### Verify a single scheme at an address
+
+```script
+npm run verify -- -c UpgradeScheme -a 0x12345... -p [provider url] -n kovan
+```
+
+### Obtain a flattened contract
+
+Output the flattened script to a file named "flattened.[contractName].sol", by supplying the absolute path to a folder in which to write the file(s):
+
+```script
+npm run verify -- -f [absolute folder path] [...] -p [provider url] -n kovan
+```
+
+### Check verification status, given GUID
+
+Given the GUID that is output by `npm run verify`:
+
+```script
+npm run verify -- -g [GUID] -n kovan
+```
+
+## Help
+```script
+npm run verify.help
+```
+
+## Lint
+
+```script
+npm run verify.lint
+```
+
+And fix:
+
+```script
+npm run verify.lint.andFix
+```
+