Added README and docker-compose, updated data

Dockerfile

+FROM gsiupm/senpy:0.8.8
+
+MAINTAINER jfernando@dit.upm.es
+
+COPY data /
\ No newline at end of file

README.md

+# Senpy example plugin
+
+This is the **Hello Senpy!** plugin.
+In every request, it will replace the text of each entry with the contents of `data/datos.txt`.
+
+## Installation
+
+* Download
+```
+git clone https://lab.cluster.gsi.dit.upm.es/senpy/plugin-example.git
+```
+* Get data
+```
+cd plugin-example
+git submodule update --init --recursive
+```
+* Run (docker compose)
+```
+docker-compose up
+```
+* Run (alternative, manual)
+```
+docker build . -t senpy-example
+docker run -p 5000:5000 senpy-example
+```
+
+## Data format
+
+`data/datos.txt` is a plain file.
+
+
+## Development
+
+The docker compose file included mounts the source code in the container.
+After changing the code, you only need to restart the service:
+
+```
+docker-compose restart senpy-example
+```
+
+Or stop and run the docker container manually if you are not using compose.
+
+
+## More information
+
+[Senpy](http://senpy.readthedocs.io) is a semantic NLP framework developed at [GSI-UPM](https://www.gsi.dit.upm.es).

data @ 45d81050

-Subproject commit 9dcdfdd7bd1758f8a0e32dfbb3510fa6f4e5d2b4
+Subproject commit 45d810504172e2361277556a1a1f81660920e6d7

docker-compose.yaml

+version: '2'
+services:
+  senpy-example:
+    build: .
+    volumes:
+      - .:/usr/src/app/
+      - data:/data
+    ports:
+      - "5000:5000"
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