Added README.md, formatted INSTALL as markdown.

INSTALL.md

@@ -1,4 +1,4 @@
-To bootstrap from another linux system:
+## To bootstrap from another linux system:
 
 Make sure you have a full development environment installed including
 compiler, linker, headers etc. Git is also required for several stages,
@@ -6,21 +6,25 @@ along with GNU wget. Commands following a # prompt are run as root, while
 those following a % prompt can be run as your normal user.
 
 Bind mount the source directory on /usr/src:
+```
 # mount -Bv <path to sourcedir> /src
-
+```
 Create a link required for the correct installation of the temporary
 toolchain:
+```
 # ln -sv <path to sourcedir>/build/toolchain /toolchain
-
+```
 Set up the environment by sourcing an included script:
+```
 # source scripts/setenv.sh
-
+```
 The system is now bootstrapped with minimal changes to the host. Should
 you wish to abort partway through and continue later, simply unmount
 /src and then remount it when ready to begin again.
 
 To build the system:
+```
 % make buildtools
 % make buildworld
-
+```
 This creates a complete root filesystem in /src/build

README.md

@@ -0,0 +1,22 @@
+# Hitch Hiker Linux
+## Source and build tree
+### #!/don't/panic
+This is the source and build tree for the Hitch Hiker Linux base system. It is
+organized thus:
+```
+.
+├── build        The output directory
+├── distfiles    Downloaded source tarballs
+├── include      Included Makefiles and headers
+├── scripts      Support scripts
+├── toolchain    Build tree for the toolchain and Glibc
+└── world        Build tree for the base system
+```
+The subdirectories ```toolchain``` and ```world``` are further subdivided by
+individual program and source package. Many of the subdirectories just wrap the
+HitchHiker build system around that of third party sources. However, the special
+subdirectories ```bin```, ```sbin```, ```usr.bin```, ```usr.sbin```, and ```lib```
+contain sources that are imported directly into HitchHiker, or written specifically
+for it, and build directly using Make.
+
+For overall instructions for building the sources, see INSTALL.md