support multiple chains; load correct contracts depending on the command line option

src/actions.js

@@ -33,7 +33,6 @@ class Actions {
   }
 
   connect(url, cb) {
-		console.dir("chain: " + url);
 		console.dir("connecting to: " + url);
     web3.setProvider(url);
 

src/contracts.js

@@ -8,11 +8,12 @@ class Contracts {
   }
 
   loadContracts() {
-    const LiquidPledgingJSONConfig = require("../dist/contracts/LiquidPledging.json");
+    console.dir("loading contracts for " + this.chain);
+    const LiquidPledgingJSONConfig = require(`../chains/${this.chain}/contracts/LiquidPledging.json`);
     const LiquidPledging = new this.web3.eth.Contract(LiquidPledgingJSONConfig.abiDefinition, LiquidPledgingJSONConfig.address);
     this.contracts.LiquidPledging = LiquidPledging;
 
-    const StandardTokenJSONConfig = require("../dist/contracts/StandardToken.json");
+    const StandardTokenJSONConfig = require(`../chains/${this.chain}/contracts/StandardToken.json`);
     const StandardToken = new this.web3.eth.Contract(StandardTokenJSONConfig.abiDefinition, StandardTokenJSONConfig.address);
     this.contracts.StandardToken = StandardToken;
   }