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/BTCCurrency.java renamed to digital-currency/bitcoin/src/main/java/org/javamoney/shelter/bitcoin/BTCCurrency.java

@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.javamoney.shelter.bitcoin.provider;
+package org.javamoney.shelter.bitcoin;
 
 import java.io.Serializable;
 import java.util.Currency;
@@ -131,6 +131,7 @@ public boolean isVirtual() {
 
 	/**
 	 * Get the namespace of this {@link CurrencyUnit}.
+	 * @deprecated namespace not commonly used across implementations, likely removed soon.
 	 */
 	public String getNamespace() {
 		return namespace;

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

@@ -19,6 +19,7 @@
 
 import org.javamoney.convert.ExchangeRate;
 import org.javamoney.moneta.MoneyCurrency;
+import org.javamoney.shelter.bitcoin.BTCCurrency;
 
 
 /**
@@ -28,7 +29,6 @@
 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();