Fixed the Markdown Headings

README.md

@@ -22,7 +22,7 @@ toolset. Source code is the ultimate documentation :-) We hope that you will fin
 find that you need other information to successfully complete your project, please enter an
 [Issue](https://github.com/microsoft/microsoft-pdb/issues) letting us know what information you need.
 
-##Start here
+## Start here
 The file pdb.h (on in langapi), provides the API surface for mscorpdb.dll, which we ship with every compiler and toolset.
 
 Important points:
@@ -36,7 +36,7 @@ A tool that I thought we also ship that would easily verify your “empty” PDB
 
 So in summary, by using the externally defined function entry points in pdb.h you can call into mscorpdb.dll.
 
-##What is a PDB
+## What is a PDB
 
 PDBs are files with multiple ‘streams’ of information in them. You can almost assume each stream as an individual file, except that storing them as individual files is wasteful and inconvenient, hence this multiple streams approach. PDB streams are not NTFS streams though. They can be implemented as NTFS streams, but since they are to be made available on Win9X as well, they use a home brewed implementation. The implementation allows a primitive form of two-phase commit protocol. The writers of PDB files write what ever they want to in PDBs, but it won’t be committed until an explicit commit is issued. This allows the clients quite a bit of flexibility - say for example, a compiler can keep on writing information, and just not commit it, if it encounters an error in users’ source code.