Update readme

Author: mkardas

README.md

@@ -1,26 +1,35 @@
-Scripts for data preparation.
+# Scripts for extracting tables
 
 Dependencies:
  * [jq](https://stedolan.github.io/jq/) (`sudo apt install jq`)
- * docker
+ * docker (run without `sudo`)
+ * [conda](https://www.anaconda.com/distribution/)
 
 Directory structure:
 ```
 .
-├── data
-│   ├── annotations
-│   │   └── evaluation-tables.json.gz     # current annotations
-│   └── arxiv
-│       ├── sources                       # gzip archives with e-prints
-│       ├── unpacked\_sources             # automatically extracted latex sources
-│       └── htmls                         # automatically generated htmls
-└── prepare-data
+└── data
+    ├── annotations
+    │   └── evaluation-tables.json.gz     # current annotations
+    └── arxiv
+        ├── sources                       # gzip archives with e-prints
+        ├── unpacked\_sources             # automatically extracted latex sources
+        ├── htmls                         # automatically generated htmls
+        ├── htmls-clean                   # htmls fixed by chromium
+        └── tables                        # extracted tables
 ```
 
 
 To preprocess data and extract tables, run:
-```cd prepare-data
+```
 conda env create -f environment.yml
 source activate xtables
-make -j 8 -i extract_all```
+make -j 8 -i extract_all > stdout.log 2> stderr.log
+```
 where `8` is number of jobs to run simultaneously.
+
+## Test
+To test the whole extraction on a single file run
+```
+make test
+```