Add readthedocs templates

Add readthedocs templates for sli/core

Change-Id: I2efaad7720997ef51c4dcb9036de5011bc6a1c4b
Issue-ID: CCSDK-107
Signed-off-by: Dan Timoney <dtimoney@att.com>
diff --git a/.gitignore b/.gitignore
index 319e695..a36bed3 100755
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@
 target
 target-ide
 MANIFEST.MF
+**/yang-gen-sal
 
 ## Misc Ignores (OS specific etc) ##
 bin/