Sqlite version in README
I've tested example database creation using [README](README.md) and encountered a few problem during the process:
1. There is missing `;` at the end of `scheme.sql` causing error:
```
Incomplete SQL: ...
```
2. After adding missing `;` there was a problem with `IF NOT EXISTS` statement at the first line causing error:
```
SQL error: near "NOT": syntax error
```
Even though everything seems to be correct the only solution was to remove `IF NOT EXISTS`
3. With the two mentioned corrections applied I tried to run `ca.py` which ended up with:
```
Traceback (most recent call last):
File "ca.py", line 14, in <module>
main()
File "ca.py", line 10, in main
sentinel_ca.run()
File ".../ca/sentinel_ca/main.py", line 72, in run
db = init_db(conf)
File ".../ca/sentinel_ca/db.py", line 22, in init_db
""")
sqlite3.DatabaseError: file is encrypted or is not a database
```
All the problems could be solved by using `sqlite3` instead of `sqlite` on the command line
I've been using:
- python3 ver. 3.5.3
- python-sqlite3 ver. 2.6.0
- sqlite 2.8.17
- sqlite3 3.16.2
- Debian Stretch
Please either correct the files or even better - add the working version of mentioned packages/programs to the README.
issue