Add .gitattributes for proper cross-OS text file handing
sde: fix `sudo ./bin/sde install` case

so we can actually `sudo sde ....` later

Signed-off-by: Alejandro Mery <amery@geeks.cl>
sde-install: change `sudo ./bin/sde install` to install at /usr/local/bin

instead of $HOME/bin, because on some systems `sudo` alters $PATH for
security reasons

Signed-off-by: Alejandro Mery <amery@geeks.cl>