bitbake: README: new readme file including main aspects of the project

Includes brief description of the project, pointers to website, documentation,
mailing list and source code.

(Bitbake rev: 28249c42701f9156a0b3153d72d7e46dacab37cb)

Signed-off-by: Leonardo Sandoval <leonardo.sandoval.gonzalez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/README

@@ -0,0 +1,35 @@
+Bitbake
+=======
+
+BitBake is a generic task execution engine that allows shell and Python tasks to be run
+efficiently and in parallel while working within complex inter-task dependency constraints.
+One of BitBake's main users, OpenEmbedded, takes this core and builds embedded Linux software
+stacks using a task-oriented approach.
+
+For information about Bitbake, see the OpenEmbedded website:
+    http://www.openembedded.org/
+
+Bitbake plain documentation can be found under the doc directory or its integrated
+html version at the Yocto Project website:
+    http://yoctoproject.org/documentation
+
+Contributing
+------------
+
+Please refer to
+http://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
+for guidelines on how to submit patches, just note that the latter documentation is intended
+for OpenEmbedded (and its core) not bitbake patches (bitbake-devel@lists.openembedded.org)
+but in general main guidelines apply. Once the commit(s) have been created, the way to send
+the patch is through git-send-email. For example, to send the last commit (HEAD) on current
+branch, type:
+
+    git send-email -M -1 --to bitbake-devel@lists.openembedded.org
+
+Mailing list:
+
+    http://lists.openembedded.org/mailman/listinfo/bitbake-devel
+
+Source code:
+
+    http://git.openembedded.org/bitbake/