Merge pull request #15 from dtcaciuc/docs

Update README

README.md

@@ -1,25 +1,20 @@
-# Grill - interrogate your programs.
-A work-in-progress cram-like test runner. (See https://github.com/brodie/cram)
+# Grill - Interrogate your programs
+
+Grill is a cram-like test runner (see https://github.com/brodie/cram).
+The project aims to provide better performance and independence from Python runtime.
 
 Grill tests are almost exactly like cram tests, and grill should work the same
 way as cram in most, but not all, cases.
 
-DONE:
-  * A command line tool (grill) that can execute tests in grill format.
-  * Support for regex and glob line matching.
-  * Shell variables are persisted between commands.
-
-TODO:
-  * Support cram's environment variables.
-  * Gradually add support for cram's command-line flags.
-  * Flesh out the tests for the test.t reader.
-
-WONTFIX:
-  * PCRE is not supported. Instead, Go's regexp language is.
+Notable differences are:
+  * (re) keyword: PCRE is not supported. Instead, Go's regexp language is.
+  * (glob) keyword: Use `**` to glob across directory separators.
   * Short flags are not supported.
 
-Additional differences:
-  * glob keyword: Use `**` to glob across directory separators.
+Still TODO / under consideration:
+  * Concurrent test execution
+  * Interactive mode
+  * Skipping
+  * Variable command indent
 
-There are probably lots of bugs at this point, bug reports and test cases would
-be appreciated.
+Bug reports and test cases are always appreciated!