add readme to nuspec (#25)

* add README to nuspec

* fix .gitignore

* add push task

* v2.0.1

* add tasks

cleanup, multi-targeting, hooks, GitHub actions (#24)

* rework w/.NET Core and multitargeting

* formatting

* add pre-commit hook

* add GitHub test job

* update pre-push hook

publishes v1.3.0.0

Added functionality to abstract the reading of text/binary STLs (see …

…STLDocument.Read) (fixes #2); commented the codebase (fixes #3); binary STLs now write the AttributeByteCount value for facets (fixes #4); added functionality to convert an STL document between text and binary format (see STLDocument.CopyAsText and STLDocument.CopyAsBinary) (fixes #5).

Renamed project and related files from 'StereoLithography' to 'STL'.