Merge pull request #1942 from deepak/patch-1

Update Rust.gitignore

Rust.gitignore

-# Compiled files
-*.o
-*.so
-*.rlib
-*.dll
-
-# Executables
-*.exe
-
 # Generated by Cargo
+# will have compiled files and executables
 /target/
 
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries