include the announce-mail description into the rather bleak README
OPAM requires that the toplevel init checks `OCAML_TOPLEVEL_PATH`

The default `ocamlinit` installed by OPAM includes some logic to
add `OCAML_TOPLEVEL_PATH` to the search path.  This lets a system
installation of OCaml work with the OPAM-managed findlib packages.

This patch adds the check to the iocaml init, and also activates
`camlp4o` and `thread` (both part of the default recommended
ocamlinit so that syntax extensions will work).  Interactive mode
is disabled to suppress initialisation messages from Camlp4Top.
Merge pull request #1 from gasche/master

include the announce-mail description into the rather bleak README
Merge pull request #2 from avsm/fix-under-opam

OPAM requires that the toplevel init checks `OCAML_TOPLEVEL_PATH`
Fix build process (conflicts with compiler-libs)

Adding ocp-index pulled in compiler-libs.common.  Including this package
in an ocamlmktop invocation causes dozens of warnings about conflicting
modules.  Further, when calling (some) compiler level modules from the
code which runs the toplevel (specifically the error reporting bits)
causes internal compiler exceptions.  Other weird stuff happens around
module loading as well.

This fixes the problem by linking in ocp-index by hand.  The
appropriate stuff is found with ocamlfind so hopefully it's safe.
Changes to ocp-index could break this so I think I will pin iocaml
to the current version and hand test upgrades for now.  I am pretty
sure a better understanding of the top level build process could fix
all this hassle.

This also changes the init procedure suggested by anil (avsm).  The
end result is the same except these options are now provided by the
command line.  The default profile sets things up as suggested for
opam.

Finally, there are some new notebooks.
update readme
update readme - trying to get images working
update readme - trying to get images working
update readme - trying to get images working 3
disable xml headers is Vg example
hack Vg output to use xlink
a working hack (needs current trunk iocaml code)
change the hack to close the object tag.  perhaps thats what breaks nbviewer?
update readme for opam release
fix link to osx instructions
cell contexts allow interactive output

Use code can request a cell_context and write to arbitrary cells in the
notebook rather than just the one currently executed.

send_clear API clears a cell output area paving the way for simple
animations.
add iocaml notebook logo
new command line options for iocaml-server

disable utf-8 conversion (which I'm not convincd about anyway)
remove ocamlnet, cryptokit and optcomp depends

uses the base64 encode taken from cohttp.
update _tags file to remove deps