* ijsconsole: add jupyter console flag to specify kernel (fixes n-rie…

…sco#111)

* ijsconsole: show keybinding to quit (closes n-riesco#112)

* bin: refactor code to parse command flags

* test: setup Travis CI

* doc: update install instructions (closes n-riesco#35, n-riesco#55, n-riesco#86 and 91)

* Added executables:

  - `ijsinstall`: to install the IJavascript kernel with Jupyter
  - `ijsnotebook`: a wrapper around `jupyter notebook`
  - `ijsconsole`: a wrapper around `jupyter console`

* Updated `README.md` and `doc/usage.md`.

Closes n-riesco#64, n-riesco#68, n-riesco#73, n-riesco#79, n-riesco#87, n-riesco#91 and n-riesco#96

* Handle `is_complete_request` messages (Fixes n-riesco#97).

* index.js: Export Kernel class.

* Use `uuid` as a dev dependency.

* Updated flag `--versions` to include `jp-kernel` and `zeromq`.

* Use prebuilt bindings of the ZMQ library through [email protected]

  (which depends on `[email protected]`, which depends on `zeromq`, which
  provides prebuilt bindings of the ZMQ library and is now maintained by
  the zeromq organisation).

* Provided kernel executable `ijskernel` (PR n-riesco#84)

* Added flag `--ijs-spec-path=[none|full]` (see discussion in PR n-riesco#84 and
  commit ee18701)

* Use mocha for testing

package.json: Version 5.0.14

* Fixes failure to load `package.json`.

Fixes n-riesco#78

package.json: Version 5.0.13

* Use package jp-kernel.

package.json: Version 5.0.12

* Fix n-riesco#75 (Prefer Jupyter over IPython to install the kernel).

* Fix n-riesco#72 (Fix EventEmitter memory leak).

* Add flag `--versions` to show IJavascript and library versions.

package.json: Version 5.0.11