Clarify where to get recent CMake from

Thanks @TheAssassin [ci skip]
AppImageCommunity · Dec 8, 2018 · 348aa5e · 348aa5e
1 parent 8111de7
commit 348aa5e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -82,6 +82,8 @@ appimaged is built using CMake.
 You can build appimaged as follows:
 
 ```
+# Optional if your CMake is not recent enough
+# wget https://github.com/Kitware/CMake/releases/download/v3.12.4/cmake-3.12.4-Linux-x86_64.tar.gz -O - | sudo tar -xz -C /usr/local --strip-components=1
 sudo apt install git cmake make g++ autoconf libtool pkg-config libglib2.0-dev libcairo2-dev libfuse-dev
 git clone --recursive https://github.com/AppImage/appimaged/
 cd appimaged/