database: files id and chdates are stored

- mysql creates database and tables to given mysql if not existent already
- mysql reads last change values from db
- mysql saves ch_date after downloading
- run now takes care for the variables of mysql and studip

README.md

@@ -13,28 +13,30 @@ If you run the program again it only downloads files that have changed since the
     - [x] Specify Stud.IP-URL
     - [x] Specify output directory
     - [x] Specify chunk size to download big files
+    - [x] Specify all important database variables
 - [x] Only download files after given date
     - [x] Save and read download date
     - [x] Possible reset of download date
-- [ ] Incremental file download
-    - [ ] Indexing downloaded files and folders
+- [x] Incremental file download
+    - [x] Store id and chdate of downloaded files
 - [ ] Logging
     - [x] Console log
     - [ ] Log file
 
 ## Installation
 
+- create an instance of
 - `git clone https://github.com/tiyn/studip-crawler`
-- `cd studip-crawler`
+- `cd studip-crawler/src/`
 - `pip3install -r requirements` - install dependencies
 
 ## Usage
 
-Just run the file via `python3 crawler.py [options]`.
-Alternatively to `python3 crawler.py` you can give yourself permissions using `chmod +x crawler.py [options]` and
-run it with `./crawler.py [options]`.
+Just run the file via `python3 run.py [options]`.
+Alternatively to `python3 run.py` you can give yourself permissions using `chmod +x run.py [options]` and
+run it with `./run.py [options]`.
 There are several options required to work.
-Run `python3 crawler.py -h` for a help menu and see which ones are important for you.
+Run `python3 run.py -h` for a help menu and see which ones are important for you.
 
 ## Tested StudIP instances