Do not fail unit tests if network is not available

Author: axic

test/package.js

@@ -531,9 +531,14 @@ tape('Compilation', function (t) {
 tape('Loading Legacy Versions', function (t) {
   t.test('loading remote version - development snapshot', function (st) {
     // getting the development snapshot
-    st.plan(3);
+    st.plan(2);
     solc.loadRemoteVersion('latest', function (err, solcSnapshot) {
-      st.notOk(err);
+      if (err) {
+        st.plan(1);
+        st.skip('Network error - skipping remote loading test');
+        st.end();
+        return;
+      }
       var output = solcSnapshot.compile('contract x { function g() public {} }');
       st.ok(':x' in output.contracts);
       st.ok(output.contracts[':x'].bytecode.length > 0);