ensure pagila-migration example is not default executable

Author: peterbecich

beam-postgres/examples/pagila.cabal

@@ -28,9 +28,8 @@ library
                       beam-postgres,
                       beam-migrate
     hs-source-dirs:   src
-    
 
-executable pagila
+executable pagila-print
     import:           warnings
     main-is:          Main.hs
     build-depends:    base,

beam-postgres/examples/readme.md

@@ -2,7 +2,7 @@
 
 There are two executables:
 
-### 1. `cabal run`
+### 1. `cabal run pagila-print`
 `cabal run` to see rendering of Postgres migration. This converts the Haskell to SQL statements and prints these to the console.
 
 ### 2. Destructive: apply migration to Postgres instance