iText 5 Sandbox

To build these examples:

Either checkout the latest release tag. The jars you need are from the latest official iText release and are published on the Maven Central repository.
Or checkout the develop branch. This depends on the current HEAD of iText. You have two options:
- Use the iText Artifactory server for SNAPSHOT builds. Add this to your pom.xml:
```
<repositories>
  <repository>
    <id>itext</id>
    <name>iText Repository - snapshots</name>
    <url>https://repo.itextsupport.com/snapshot/</url>
  </repository>
</repositories>
```
- Clone the iText repository and build everything yourself.

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