Install the binary to the XDG standard bin directory

[waldyrious]

Currently the install.sh script places the symlink to the binary at ~/bin, which is not a standard location for such binaries. Instead, it would be nice if it was placed in ~/.local/bin, which is recommended by the XDG standard as a place to store executables:

User-specific executable files may be stored in $HOME/.local/bin. Distributions should ensure this directory shows up in the UNIX $PATH environment variable, at an appropriate place.

For what it's worth, I currently have no other tools installed in ~/bin, while ~/.local/bin has 37 entries.