Merge pull request #57 from alexeyinkin/issue54_delete-pubspec-lock

Remove pubspec.lock in package and example (#54)

Author: BertrandBev

.gitignore

@@ -72,3 +72,5 @@ build/
 !**/ios/**/default.mode2v3
 !**/ios/**/default.pbxuser
 !**/ios/**/default.perspectivev3
+
+pubspec.lock