Added cute simplified API plus a CLI frontend

Shpell/Simple.hs

@@ -0,0 +1,32 @@
+module Shpell.Simple (shpellCheck, ShpellComment, shpellLine, shpellColumn, shpellSeverity, shpellComment) where
+
+import Shpell.Parser
+import Shpell.Analytics
+import Data.Maybe
+import Text.Parsec.Pos
+
+data ShpellComment = ShpellComment { shpellLine :: Int, shpellColumn :: Int, shpellSeverity :: String, shpellComment :: String }
+
+
+instance Show ShpellComment where
+    show c = concat ["(", show $ shpellLine c, ",", show $ shpellColumn c, ") ", shpellSeverity c, ": ", shpellComment c]
+
+shpellCheck script = 
+    let (ParseResult result notes) = parseShell "-" script in
+        let allNotes = notes ++ (concat $ maybeToList $ do
+            (tree, map) <- result
+            let newMap = runAllAnalytics tree map
+            return $ notesFromMap newMap 
+            )
+        in
+            map formatNote $ sortNotes allNotes
+
+
+severityToString s = 
+    case s of 
+        ErrorC -> "error"
+        WarningC -> "warning"
+        InfoC -> "info"
+        StyleC -> "style"
+
+formatNote (ParseNote pos severity text) = ShpellComment (sourceLine pos) (sourceColumn pos) (severityToString severity) text