add bash/clojure/java unworked problem sets

clojure/hello-world/README.md

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+# Hello World
+
+The classical introductory exercise. Just say "Hello, World!".
+
+["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
+the traditional first program for beginning programming in a new language
+or environment.
+
+The objectives are simple:
+
+- Write a function that returns the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
+
+If everything goes well, you will be ready to fetch your first real exercise.
+
+### Project Structure
+
+Clojure exercises in exercism use [leiningen](http://leiningen.org/) to configure and run your code
+and use [leiningen standard directory structure](https://github.com/technomancy/leiningen/blob/master/doc/TUTORIAL.md#directory-layout).
+
+You will find a test file named `hello_world_test.clj` inside `test` directory.
+Write your code in `src/hello_world.clj`. It should use the namespace `hello-world` so that tests can pick it up.
+
+### Running tests
+
+Run the tests using `lein test` command and make them pass:
+
+```
+$ lein test
+
+lein test hello-world-test
+
+Ran 1 tests containing 1 assertions.
+0 failures, 0 errors.
+```
+
+Then submit the exercise using:
+
+```
+$ exercism submit src/hello_world.clj
+```
+
+For more detailed instructions and learning resources refer [exercism's clojure language page](http://exercism.io/languages/clojure).
+
+## Source
+
+This is an exercise to introduce users to using Exercism [http://en.wikipedia.org/wiki/%22Hello,_world!%22_program](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.