implemented review comments

Author: blutsvente

.gitattributes

@@ -1,2 +1,4 @@
-/.git* export-ignore
-/test export-ignore
+# Package Exclusion Rules
+.git* export-ignore
+test/** export-ignore
+collaterals/** export-ignore

.gitignore

@@ -1,3 +1,3 @@
+# Ignore local files
 copy2packages_dir.sh
 .DS_Store
-copy2packages_dir.sh

README.md

@@ -1,5 +1,5 @@
-# PSS-DSL-syntax
-PSS-DSL (Portable Stimulus Specification domain-specific language) syntax for Sublime Text 3+4.
+# PSS DSL syntax
+PSS DSL (Portable Stimulus Specification domain-specific language) syntax for Sublime Text 3+4.
 It supports highlighting of embedded C-code in exec blocks.
 
 ## Manual Install