Previously I am using spf13 for my vim configuration. However it is a bit sluggish for me since it includes too much settings and plugins which might not be needed for my daily usage, therefore I deicide to move to this vimrc.
New plugins installed manually such as vim-rails, vim-autoformat, YouCompleteMe, tagbar, vim-ctrlp-tjump etc.
Ctags is also needed for go to definition.
I remove/comment out the line to have deafault key mapping for multiple selection in plugins_config.vim
Here is how it looks for my_configs.vim