[igt-dev] [PATCH i-g-t] README: Add missing dependencies

[José Roberto de Souza]

Doing a fresh Ubuntu 18.10 install this dependencies were also
needed to build IGT.

Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 865ed6e0..e9798419 100644
--- a/README.md
+++ b/README.md
@@ -139,13 +139,16 @@ Requirements
 This is a non-exhaustive list of package dependencies required for building
 the default configuration (package names may vary):
 
+	bison	
 	gtk-doc-tools
+	flex
 	libcairo2-dev
 	libdrm-dev
 	libkmod-dev
 	libpixman-1-dev
 	libpciaccess-dev
 	libprocps-dev
+	libudev-dev
 	libunwind-dev
 	liblzma-dev
 	libdw-dev
-- 
2.22.0