Merge pull request #207 from amirmc/platform-page

Changes to how Platform page is linked
fix link to Jane St (closes #191)
fix #200
part fix for #204
partial fix for #204
remove extra leading spaces in code blocks
fix link (packages=>https://opam.ocaml.org/pkg/)
fix link (missing .html)
fix link
Fix "Syntax error: redirection unexpected".
Use recursive make.
Use -linkpkg instead of enumerating the modules.
Ignore files generated by compiling.
Use $(RM) instead of `rm -f`.
note about mpp version
Rename README-redesign.md to README.md
remove unused rule + update clean
Add link to planet.o.o and remove reference to OCamlCore.
Add G+ OCaml community.
Add links to more content of the OCaml Meeting