Bump for release

Author: jeroen

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: tesseract
 Type: Package
 Title: Open Source OCR Engine
-Version: 2.1.9000
+Version: 2.2
 Authors@R: person("Jeroen", "Ooms", role = c("aut", "cre"), email = "jeroen@berkeley.edu",
     comment = c(ORCID = "0000-0002-4035-0289"))
 Description: Bindings to 'Tesseract' <https://opensource.google.com/projects/tesseract>: