Use tee to work around permission issues with sudo

[ftzdomino]

sudo doesn't apply the the stdout redirect, so this change pipes to "sudo tee" in order to write the file

[pavelsr]

I think the best option is to use curl -o option instead:

sudo curl https://raw.githubusercontent.com/universal-ctags/ctags-docker/master/uctags -o /usr/local/bin/uctags