Fhir-pyrate

**Changes**:
- Adjusted links for PyPi readme

**Changes**:
- Adjusted package management because of a dependency that is not present on PyPi, added warnings
- Added more information in README
- Fixed typos in examples

**Full Changelog**: https://github.com/UMEssen/FHIR-PYrate/compare/v0.1.0-beta.1...v0.1.0-beta.2

Queries on FHIR servers made simple with FHIR-PYrate. Features include:
- Multiprocessing of resources
- Use of FHIRPath or functions to retrieve the desired resources
- Download of ImagingStudies with DicomDownloader
- DiagnosticReport search with Miner

**Full Changelog**: https://github.com/UMEssen/FHIR-PYrate/commits/v0.1.0-beta.1