Added p4c option to auto init metadata for SDE 9.0.0

Build.sh script only support SDE > 9.0.0, README updated accordingly.

Change-Id: I712bf3eb3fd2c311ca70699d59fd463741e575b0
diff --git a/.gitignore b/.gitignore
index da66965..75651fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.iml
 target/
 tmp/
+.idea/