added clangformat.txt and updated readme

README.md

@@ -6,3 +6,6 @@ Chatterino 2 is the second installment of my twitch chat client series "Chatteri
 1. download the [boost library](https://sourceforge.net/projects/boost/files/boost/1.63.0/boost_1_63_0.zip/download) and extract it to `C:\local\boost`
 2. download binaries for OpenSSL >= 1.0.2 or compile it from source. [example download](https://indy.fulgan.com/SSL/)
 3. Place libeay32.dll and ssleay32.dll from OpenSSL in a directory in PATH.
+
+## code style
+The code is normally formated using clang format in qt creator. [clangformat.txt](https://github.com/fourtf/chatterino2/blob/master/clangformat.txt) conatins the style file for clang format.

clangformat.txt

@@ -0,0 +1,28 @@
+IndentCaseLabels: true
+BasedOnStyle: Google
+IndentWidth: 4
+Standard: Auto
+PointerBindsToType: false
+Language: Cpp
+SpacesBeforeTrailingComments: 2
+AccessModifierOffset: -1
+AlignEscapedNewlinesLeft: true
+AlwaysBreakAfterDefinitionReturnType: true
+AlwaysBreakBeforeMultilineStrings: false
+BreakConstructorInitializersBeforeComma: true
+# BreakBeforeBraces: Linux
+BreakBeforeBraces: Custom
+AccessModifierOffset: -4
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+AllowShortFunctionsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+DerivePointerBinding: false
+BraceWrapping: {
+    AfterNamespace: 'false'
+    AfterClass: 'true'
+    BeforeElse: 'false'
+    AfterControlStatement: 'false'
+    AfterFunction: 'true'
+    BeforeCatch: 'false'
+}