Add OPAM 1.2.0 beta4 post
tempoarily put the packages image on my url since its not clear where it goes in opam2web
Merge pull request #4 from avsm/opam-1-2-0beta4

Add OPAM 1.2.0 beta4 post
tweak blog title to match others
tweak image size
Merge branch 'opam-1-2-0beta4'
Dropped mention of JS Core accidentally; pasted back
fix typos in markdown
Fix markdown links for Jane Street

Partial fix for #5
Merlin IDE editor -> Merlin IDE extension

Closes #5
Note that linked repo is private

Response to #7