read more about amount too low warning

src/js/controllers/tx-details.js

@@ -40,6 +40,16 @@ angular.module('copayApp.controllers').controller('txDetailsController', functio
     });
   });
 
+  $scope.readMore = function() {
+    var url = 'https://github.com/bitpay/copay/wiki/COPAY---FAQ#amount-too-low-to-spend';
+    var optIn = true;
+    var title = null;
+    var message = gettextCatalog.getString('Read more in our Wiki');
+    var okText = gettextCatalog.getString('Open');
+    var cancelText = gettextCatalog.getString('Go Back');
+    externalLinkService.open(url, optIn, title, message, okText, cancelText);
+  };
+
   function updateMemo() {
     walletService.getTxNote($scope.wallet, $scope.btx.txid, function(err, note) {
       if (err) {

src/sass/views/includes/txp-details.scss

@@ -99,6 +99,9 @@
         i {
           padding-right: 20px;
         }
+        span {
+          display: inline;
+        }
       }
     }
     .toggle-unconfirmed {

www/views/tx-details.html

@@ -91,9 +91,11 @@
         <div class="item low-fees" ng-if="btx.lowAmount">
           <i class="icon"><img src="img/icon-warning.png" width="20px"></i>
           <span translate>
-This transaction amount is too small compared to current Bitcoin network fees. Spending these funds will need a Bitcoin network fee cost comparable to the funds itself. </span>
+            This transaction amount is too small compared to current Bitcoin network fees. Spending these funds will need a Bitcoin network fee cost comparable
+            to the funds itself. <a ng-click="readMore()" translate>Read more</a>
+          </span>
         </div>
- 
+
         <div class="item single-line">
           <span class="label" translate>Confirmations</span>
           <span class="item-note">