rewrote READMEs and other markdown docs

**all: folded to margins**

README: used local image, expanded license into a small section

CONTRIBUTING: added title

relooper README: removed licensing data (root of repo contains license)

1 files changed, 19 insertions, 7 deletions

diff --git a/README.md b/README.md
index 81a95141..6b4778bf 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,26 @@
+![emscripten logo](media/switch_logo.jpeg)
 
-![logo](http://dl.dropbox.com/u/80664946/emscripten_logo.jpg)
-
-Emscripten
-==========
-
-Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode - which can be generated from C/C++, using llvm-gcc or clang, or any other language that can be converted into LLVM - and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run).
+Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode - which can be generated
+from C/C++, using `llvm-gcc` (DragonEgg) or `clang`, or any other language that can be
+converted into LLVM - and compiles that into JavaScript, which can be run on the web (or
+anywhere else JavaScript can run).
 
 Links to **demos**, **tutorial**, **FAQ**, etc: <https://github.com/kripken/emscripten/wiki>
 
 Main project page: <http://emscripten.org>
 
-Emscripten is MIT licensed, see LICENSE.txt.
+License
+-------
+
+Emscripten is available under 2 licenses, the MIT license and the
+University of Illinois/NCSA Open Source License.
+
+Both are permissive open source licenses, with little if any
+practical difference between them.
+
+The reason for offering both is that (1) the MIT license is
+well-known, while (2) the University of Illinois/NCSA Open Source
+License allows Emscripten's code to be integrated upstream into
+LLVM, which uses that license, should the opportunity arise.
 
+See `LICENSE` for the full content of the licenses.