Simplify Linux installation to copy-paste (#928)

* Simplify Linux installation to copy-paste

* Update platform.md

* Update downloads/platform.md

Co-authored-by: Rafael Fourquet <fourquet.rafael@gmail.com>

* Update platform.md

* Update downloads/platform.md

Co-authored-by: Zlatan Vasović <zlatanvasovic@gmail.com>

Co-authored-by: Rafael Fourquet <fourquet.rafael@gmail.com>
Co-authored-by: Viral B. Shah <ViralBShah@users.noreply.github.com>
Co-authored-by: Zlatan Vasović <zlatanvasovic@gmail.com>

downloads/platform.md

@@ -79,9 +79,16 @@ You can uninstall Julia by deleting Julia.app and the packages directory in `~/.
 
 ## Linux and FreeBSD
 
-It is strongly recommended that the official generic binaries from the downloads page be used to install Julia on Linux and FreeBSD.
+It is strongly recommended that the official generic binaries from the downloads page be used to install Julia on Linux and FreeBSD. The following
+command downloads the latest Julia version and makes a symlink to allow the `julia` command to find the binary:
 
+```
+wget https://julialang-s3.julialang.org/bin/linux/x64/1.4/julia-{{ stable_release }}-linux-x86_64.tar.gz
+tar -xvzf julia-{{ stable_release }}-linux-x86\_64.tar.gz
+ln -s "$PWD"/julia-{{ stable_release }}/bin/julia ~/.local/bin/
+```
 
+### More Detailed Instructions and Explanation
 
 The generic Linux and FreeBSD binaries do not require any special installation steps, but you will need to ensure that your system can find the `julia` executable.