Replaced git submodule by subtree merged in contrib/library/text/parser/json

contrib/library/text/parser/json/test/getest/readme.txt

@@ -0,0 +1,10 @@
+To compile and run the test program do as follows:
+
+1. Make sure you have a compiled version of getest in your PATH.
+
+2. In this dircetory, run the command:
+
+   $ getest --verbose --ise ejson_test.cfg
+
+
+Note: on Windows, you should use  ejson_test-win.cfg