Add version

Author: srawlins

lib/src/model/package_builder.dart

@@ -246,11 +246,7 @@ class PubPackageBuilder implements PackageBuilder {
   Set<PackageMeta> _packageMetasForFiles(Iterable<String> files) {
     var metas = <PackageMeta>{};
     for (var filename in files) {
-      var x = packageMetaProvider.fromFilename(filename);
-      if (x == null) {
-        print('GOT NULL PM FOR "$filename"');
-      }
-      metas.add(x);
+      metas.add(packageMetaProvider.fromFilename(filename));
     }
     return metas;
   }

test/package_test.dart

@@ -27,12 +27,10 @@ void main() {
     mockSdk = MockSdk(resourceProvider: resourceProvider);
     for (var l in mockSdk.sdkLibraries) {
       var p = l.path;
-      print('WRITING ${resourceProvider.pathContext.canonicalize(p)} FROM $p');
       resourceProvider
           .getFile(resourceProvider.pathContext.canonicalize(p))
           .writeAsStringSync(resourceProvider.getFile(p).readAsStringSync());
     }
-    //var pathContext = resourceProvider.pathContext;
     sdkFolder = resourceProvider.getFolder(resourceProvider.pathContext
         .canonicalize(resourceProvider.convertPath(sdkRoot)))
       ..create();
@@ -43,7 +41,6 @@ void main() {
     var sdkFolderNonCanon = resourceProvider
         .getFolder(resourceProvider.convertPath(sdkRoot))
           ..create();
-    print('WROTE SDK DIR: ${sdkFolderNonCanon.path}');
     var sdkBinFolderNonCanon = sdkFolderNonCanon.getChildAssumingFolder('bin')
       ..create();
     sdkBinFolderNonCanon.getChildAssumingFile('dart').writeAsStringSync('');
@@ -60,6 +57,7 @@ void main() {
     projectRoot = projectFolder.path;
     projectFolder.getChildAssumingFile('pubspec.yaml').writeAsStringSync('''
 name: $packageName
+version: 0.0.1
 ''');
     projectFolder.getChildAssumingFolder('.dart_tool').create();
     projectFolder