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README.md

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+I made this repository to illustrate some issues I've been having with
+Plan9's git implementation.
+
+# Rebase Problem
+
+Switch to branch b with:
+
+```
+git/branch b
+```
+
+Try to rebase it on top of branch a with:
+
+```
+git/rebase a
+```
+
+Notice that branch now points to the same commit as branch a.  The
+last commit from branch b seems to have ceased to exist.
+
+# Merge Problem
+
+Switch to branch c with:
+
+```
+git/branch c
+```
+
+Try to merge in branch a with:
+
+```
+git/merge a
+```
+
+Notice that this should have resulted in a merge conflict, but didn't.