Add source for 'elastic.co/guide' to 'docs/guide'

docs/Makefile

@@ -5,7 +5,7 @@
 # from the environment for the first two.
 SPHINXOPTS    ?=
 SPHINXBUILD   ?= sphinx-build
-SOURCEDIR     = source
+SOURCEDIR     = sphinx
 BUILDDIR      = build
 
 # Put it first so that "make" without argument is like "make help".

docs/guide/index.asciidoc

@@ -0,0 +1,9 @@
+= eland
+
+:doctype:           book
+
+include::{asciidoc-dir}/../../shared/attributes.asciidoc[]
+
+include::overview.asciidoc[]
+
+include::installation.asciidoc[]

docs/guide/installation.asciidoc

@@ -0,0 +1,16 @@
+[[installation]]
+== Installation
+
+Eland can be installed with https://pip.pypa.io[pip] from https://pypi.org/project/eland[PyPI]:
+
+[source,sh]
+-----------------------------
+$ python -m pip install eland
+-----------------------------
+
+and can also be installed with https://docs.conda.io[Conda] from https://anaconda.org/conda-forge/eland[Conda Forge]:
+
+[source,sh]
+------------------------------------
+$ conda install -c conda-forge eland
+------------------------------------

docs/guide/overview.asciidoc

@@ -0,0 +1,66 @@
+[[overview]]
+== Overview
+
+Eland is a Python client and toolkit for DataFrames and {ml} in {es}.
+Full documentation is available on https://eland.readthedocs.io[Read the Docs].
+Source code is available on https://github.com/elastic/eland[GitHub].
+
+[discrete]
+=== Compatibility
+
+The library is compatible with all {es} versions since `7.6.x` but you
+**have to use a matching major version**:
+
+The recommended way to set your requirements in your `setup.py` or
+`requirements.txt` is::
+
+    # Elasticsearch 7.x
+    eland>=7,<8
+
+Because Eland uses some experimental APIs for {ml} it
+is also recommended to install the same major and minor for `elasticsearch-py`
+as your cluster. For example if your cluster is v7.8.1 you would install
+like so::
+
+    $ python -m pip install 'eland>=7,<8' 'elasticsearch>=7.8,<7.9'
+
+[discrete]
+=== Getting Started
+
+Create a `DataFrame` object connected to an {es} cluster running on `localhost:9200`:
+
+[source,python]
+------------------------------------
+>>> import eland as ed
+>>> df = ed.DataFrame(
+...    es_client="localhost:9200",
+...    es_index_pattern="flights",
+... )
+>>> df
+       AvgTicketPrice  Cancelled  ... dayOfWeek           timestamp
+0          841.265642      False  ...         0 2018-01-01 00:00:00
+1          882.982662      False  ...         0 2018-01-01 18:27:00
+2          190.636904      False  ...         0 2018-01-01 17:11:14
+3          181.694216       True  ...         0 2018-01-01 10:33:28
+4          730.041778      False  ...         0 2018-01-01 05:13:00
+...               ...        ...  ...       ...                 ...
+13054     1080.446279      False  ...         6 2018-02-11 20:42:25
+13055      646.612941      False  ...         6 2018-02-11 01:41:57
+13056      997.751876      False  ...         6 2018-02-11 04:09:27
+13057     1102.814465      False  ...         6 2018-02-11 08:28:21
+13058      858.144337      False  ...         6 2018-02-11 14:54:34
+
+[13059 rows x 27 columns]
+------------------------------------
+
+Eland can also be used for complex queries and aggregations:
+
+[source,python]
+------------------------------------
+>>> df[df.Carrier != "Kibana Airlines"].groupby("Carrier").mean(numeric_only=False)
+                  AvgTicketPrice  Cancelled                     timestamp
+Carrier                                                                  
+ES-Air                630.235816   0.129814 2018-01-21 20:45:00.200000000
+JetBeats              627.457373   0.134698 2018-01-21 14:43:18.112400635
+Logstash Airways      624.581974   0.125188 2018-01-21 16:14:50.711798340
+------------------------------------

docs/make.bat

@@ -7,7 +7,7 @@ REM Command file for Sphinx documentation
 if "%SPHINXBUILD%" == "" (
 	set SPHINXBUILD=sphinx-build
 )
-set SOURCEDIR=source
+set SOURCEDIR=sphinx
 set BUILDDIR=build
 
 if "%1" == "" goto help