[trivial] Update contrib/devtools/README.md

Author: MarcoFalke

contrib/devtools/README.md

@@ -1,9 +1,14 @@
 Contents
-===========
+========
 This directory contains tools for developers working on this repository.
 
+clang-format.py
+===============
+
+A script to format cpp source code according to [.clang-format](../../src/.clang-format). This should only be applied to new files or files which are currently not actively developed on. Also, git subtrees are not subject to formatting.
+
 github-merge.sh
-==================
+===============
 
 A small script to automate merging pull-requests securely and sign them with GPG.
 
@@ -37,23 +42,31 @@ Configuring the github-merge tool for the bitcoin repository is done in the foll
     git config --global user.signingkey mykeyid (if you want to GPG sign)
 
 fix-copyright-headers.py
-===========================
+========================
 
 Every year newly updated files need to have its copyright headers updated to reflect the current year.
 If you run this script from src/ it will automatically update the year on the copyright header for all
 .cpp and .h files if these have a git commit from the current year.
 
 For example a file changed in 2014 (with 2014 being the current year):
+
 ```// Copyright (c) 2009-2013 The Bitcoin Core developers```
 
 would be changed to:
+
 ```// Copyright (c) 2009-2014 The Bitcoin Core developers```
 
+optimize-pngs.py
+================
+
+A script to optimize png files in the bitcoin
+repository (requires pngcrush).
+
 symbol-check.py
-==================
+===============
 
 A script to check that the (Linux) executables produced by gitian only contain
-allowed gcc, glibc and libstdc++ version symbols.  This makes sure they are
+allowed gcc, glibc and libstdc++ version symbols. This makes sure they are
 still compatible with the minimum supported Linux distribution versions.
 
 Example usage after a gitian build:
@@ -70,7 +83,7 @@ If there are 'unsupported' symbols, the return value will be 1 a list like this
     .../64/test_bitcoin: symbol _ZNSt8__detail15_List_nod from unsupported version GLIBCXX_3.4.15
 
 update-translations.py
-=======================
+======================
 
 Run this script from the root of the repository to update all translations from transifex.
 It will do the following automatically:
@@ -93,4 +106,5 @@ maintained:
 * for sec/leveldb: https://github.com/bitcoin/leveldb.git (branch bitcoin-fork)
 
 Usage: git-subtree-check.sh DIR COMMIT
+
 COMMIT may be omitted, in which case HEAD is used.