Fix RescriptBuild command

Author: ryyppy

autoload/rescript.vim

@@ -427,7 +427,7 @@ function! rescript#Build(...)
     " Otherwise we are in modern mode and use rescript.exe
     let l:cmd = g:rescript_exe
     if l:with_deps ==? 1
-      let l:cmd = g:rescript_exe . " -with-deps"
+      let l:cmd = g:rescript_exe . " build -with-deps"
     endif
   endif
 
@@ -511,6 +511,7 @@ function! rescript#ReasonToRescript()
     echo "Current buffer is not a .re / .rei file... Do nothing."
     return
   endif
+
   let l:command = g:rescript_bsc_exe . " -format " . @%
 
   silent let l:out = systemlist(l:command)
@@ -548,6 +549,7 @@ function! rescript#Info()
     echo "Detected rescript_bsb_exe: " . g:rescript_bsb_exe
   else
     echo "Detected rescript_exe: " . g:rescript_exe
+    echo "Detected (legacy) rescript_bsc_exe: " . g:rescript_bsc_exe
   endif
 
   echo "Bundled rescript server version: " . rescript#GetRescriptServerVersion()