OPEN - task 1: Create Bitcoin project

http://github.com/JavaMoney/javamoney-shelter/issues/issue/1

Author: keilw

digital-currency/bitcoin/src/main/java/org/javamoney/shelter/bitcoin/provider/MtGoxV2ConversionProvider.java

@@ -14,8 +14,6 @@
  */
 package org.javamoney.shelter.bitcoin.provider;
 
-import static org.javamoney.shelter.bitcoin.provider.BTCCurrency.BTC_NAMESPACE;
-
 import java.io.IOException;
 import java.net.URL;
 import java.util.Locale;
@@ -172,7 +170,7 @@ void loadRate(String curCode, boolean verbose) {
 			}
 	        if (verbose) System.out.println( "display_short : " +lastNode.path("display_short").getTextValue());
     	} else {
-    		throw new UnknownCurrencyException(BTC_NAMESPACE, curCode);
+    		throw new UnknownCurrencyException("Currency not supported", curCode);
     	}
     }
 

digital-currency/bitcoin/src/test/java/org/javamoney/shelter/bitcoin/provider/MtGoxV2ConversionDemo.java

@@ -28,6 +28,7 @@
 public class MtGoxV2ConversionDemo {
     public static void main(String... arg) throws MonetaryException {
     	CurrencyUnit btc = BTCCurrency.of();
+    	CurrencyUnit btc2 = MoneyCurrency.of("BTC");
     	System.out.println("Currency: " + btc);
     	//MtGoxV2ConversionProvider provider = new MtGoxV2ConversionProvider("USD");
     	MtGoxV2ConversionProvider provider = new MtGoxV2ConversionProvider();