Added readme

README.md

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+Piquant
+====
+
+Piquant is a little toy operating system I'm building.
+
+Why?
+=====
+
+Because it's fun. Don't you like to have fun? Ogre.
+
+What does it do?
+=====
+
+Right now, not much of anything at all. It boots from a 1.44mB floppy disk, throws some text to the screen, and enters a primitive REPL (where you can do nothing but display a help message, HALT the machine, or RESET the machine).
+
+![Image of Piquant v0.1](media/screenshot.png)
+
+I think I'm going to expand the basic REPL into a BASIC interpreter, just like the classic machines of the 80s. "Operating System? Oh, you mean the BASIC ROM, right?" :)
+
+How can I run it?
+=====
+
+You have to build it to run it. To build it, you need:
+
+* bcc (bruce's c compiler - check your OS's package repositories)
+* nasm
+* gnu make
+* ld86, objdump86, as86
+
+To run it, you can use anything, but the makefile assumes you have 'bochs' installed.
+
+    make clean test
+
+This will rebuild all of the sources and fire up the bochs emulator. Have fun.