doc(README.md): add line breaks

Author: rouson

README.md

@@ -1,9 +1,11 @@
 Julienne
 ========
 
-Julienne is a modern-Fortran unit-testing framework that includes utilities for manipulating strings (via Julienne's `string_t` derived type), including command line arguments (via Julienne's `command_line_t` type) and input/output format strings (via Julienne's `formats_m` module).
-Users construct tests by
+Julienne is a modern-Fortran unit-testing framework that includes utilities for manipulating strings 
+via Julienne's `string_t` derived type.  The target strings include command-line arguments accessed
+via Julienne's `command_line_t` type  and format strings generated by functions in Julienne's `formats_m` module.
 
+Users construct tests by
 * Extending Julienne's `test_t` abstract derived type,
 * Constructing an array of `test_description_t` objects, each of which encapsulates
    * A string describing what functionality is being tested and