error: when there's no Eakefile in the current working directory

[sinasamavati]

expected:

run without error

actual:

*[master][~/eake]$ ./eake                                                                                                                         rvm:ruby-2.0.0-p247
escript: exception error: bad argument
  in function  hd/1
     called as hd([])
  in call from eake:describe_function/3 (src/eake.erl, line 57)
  in call from eake:compile_eake_tasks/0 (src/eake.erl, line 37)
  in call from eake:main/1 (src/eake.erl, line 8)
  in call from escript:run/2 (escript.erl, line 747)
  in call from escript:start/1 (escript.erl, line 277)
  in call from init:start_it/1
  in call from init:start_em/1