Reduce the scope of searching for libclang

+ Checks the /usr/ directory recursively

Add example path to more common libclang1
+ libclang-10-dev is not available on WSL

.bash_aliases

@@ -19,3 +19,8 @@ export EDITOR="vim"
 export VISUAL="vim"
 export LS_COLORS="di=1;34:ln=31;47:so=32:pi=33:ex=1;32:bd=34;46:cd=34;43:su=30;41:sg=30;46:tw=30;42:ow=30;43"
 
+# Example path for autocompletion using libclang1 package, obtained by the following command
+# find /usr/ -name libclang.so.1 2>/dev/null
+#export LIBCLANG="/usr/lib/llvm-6.0/lib/libclang.so.1"
+
+