Merge pull request #70 from github-for-unity/fix-appveyor

Fix appveyor build now that the project is public

Author: shana

appveyor.yml

@@ -5,10 +5,10 @@ environment:
 clone_script:
 - ps: >-
     if(-not $env:appveyor_pull_request_number) {
-      git lfs clone -q -n --branch=$env:appveyor_repo_branch git@github.com:$env:appveyor_repo_name.git $env:appveyor_build_folder
+      git lfs clone -q -n --branch=$env:appveyor_repo_branch https://github.com/$env:appveyor_repo_name.git $env:appveyor_build_folder
       git checkout -qf $env:appveyor_repo_commit
     } else {
-      git lfs clone -q -n git@github.com:$env:appveyor_repo_name.git $env:appveyor_build_folder
+      git lfs clone -q -n https://github.com/$env:appveyor_repo_name.git $env:appveyor_build_folder
       git fetch -q origin +refs/pull/$env:appveyor_pull_request_number/merge:
       git lfs fetch origin FETCH_HEAD
       git checkout -qf FETCH_HEAD