Changes name to executable. Added README.

README

@@ -0,0 +1,12 @@
+Browser for Scion
+=================
+
+The code here aims to be the backend part for package browser support in EclipseFP and any other development environment which uses Scion as backend. It can generate databases from the local set of packages, and from the Hackage database if internet connectivity is available. Later, those databases can be queries for modules, or declarations inside them.
+
+Currently, the functionality is provided via a command-line program which receives JSON requests and prints out JSON values in response. In each moment, a database is made *current* and will be the one to be queried. The available commands are:
+* `{ "command" : "load-local-db", "filepath" : "local.db" }`: generates a database from the local installed packages, and saves the result in `local.db`,
+* `{ "command" : "get-packages" }`: shows the list of packages in the current database,
+* `{ "command" : "set-current-db", "new-db" : id }`: sets the current database. `id` can take different values: `_all` for both Hackage and local databases, `_hackage` for Hackage database (not yet implemented), `_local` for the local packages database and `{ "name" : "package-name", "version" : "x.y.z" }` for query only a specific package,
+* `{ "command" : "get-modules", "module" : "mod" }`: get all direct descendants of the module `mod` (that is, if we query for modules in `A`, we would get `A.B`, `A.C`, but not `A.B.C`). To ask for root-level modules, query for module `""`,
+* `{ "command" : "get-declarations", "module" : "mod" }`: queries the module `mod` for all declarations (datatypes, newtypes, typeclasses, instances, functions and type synonyms) inside it.
+

scion-browser.cabal

@@ -48,7 +48,7 @@ library
 
   ghc-options: -rtsopts -Wall -fno-warn-unused-do-bind -fno-warn-orphans
 
-executable hoogle-parsec
+executable scion-browser
   hs-source-dirs:  src
   main-is:         Main.hs
   build-depends: