Continuous integration testing with travis and drone

[Pavel Evstigneev via Digitalmars-d]

I want to share how I made testing for some open source project.

I try with http://travis-ci.org and http://drone.io

**For drone.io:**

* Add project
* Choose C/C++ as language
* Add build command which will install D compiler and run tests.

Command:

```
sudo wget 
http://netcologne.dl.sourceforge.net/project/d-apt/files/d-apt.list 
-O /etc/apt/sources.list.d/d-apt.list

sudo apt-get update -qq
sudo apt-get -y --allow-unauthenticated install --reinstall 
d-apt-keyring
sudo apt-get update -qq

sudo apt-get install dmd-bin dub

MYSQL_USER="root" MYSQL_PASSWORD="" dub test
```

**For travis ci:**

Create file .travis.yml

```
language: c

compiler:
   - gcc

before_install:
   - sudo wget 
http://netcologne.dl.sourceforge.net/project/d-apt/files/d-apt.list 
-O /etc/apt/sources.list.d/d-apt.list
   - sudo apt-get update -qq
   - sudo apt-get -y --allow-unauthenticated install --reinstall 
d-apt-keyring
   - sudo apt-get update -qq
   - sudo apt-get install dmd-bin dub

env:
   - MYSQL_USER="root" MYSQL_PASSWORD=""

script: dub test
```


Here is project I tested https://github.com/Paxa/mysql.d