Update README.md (#1)

Update docs based on the modified test script

Changed a few things in the README.

The `sample_data_loader.py` adds the test data based on the CSV sample data files available in the [amundsendatabuilder](https://github.com/lyft/amundsendatabuilder/tree/master/example/sample_data)

* Add shared button styles + modify tag modal to match owner modal

* Some tweaks

* Per design, flag text should be sentence case

* Add support to customize the case style.

* Update table owner editing UI

* Minor code cleanup

* Address comments, rebase for new Redux state shape, add a loading spinner

* Fix typo in the word 'reload'

* tweak loading spinner use/style in modal

* cleanup

* Minor tweaks

- Removed double margin from .table-details > .row
- Fixed panel borders

- Refactor of search results and related types.
-- `SearchListResult`  - > `Resource`,
-- `SearchListItem` -> `ResourceListItem` and `TableListItem`
- Modified search APIs to support different resources such as tables, users, and dashboards.

* Un-nest owners and tags state: Move from state.tableMetadata.tableData to state.tableMetadata

* Create a nested reducer for owners

* Rename ducks/tags -> ducks/allTags to reduce confusion with table tags

* Create a nested reducer for table tags

* Some code cleanup

* Added table data defaults + utilMethods

- Leverages existing bootstrap-react tab components

* Add a simple, re-useable Flag component

* Use bootstrap labels

* Remove line-height from Flag styles

* style -> labelStyle + add a note about bootstrap 4 upgrade

Update the link in the readme

Update readme to include more infos

It is important to install the amundsen data builder before running the test script locally, 
otherwise the imports won't work in the test script.

Update README.md

Reorganize the document into different sections

* Reset preview reducer state on GetTableData

* Fix type error

* preview state should be controlled by tableMetadata reducer

* dispatch getPreviewData from TableDetail container

* Pass a modalTitle to DataPreviewButton instead of queryParams

* Changed editable-text interaction
- Use "edit" link instead of icon
- "edit" is visible for empty text values and on hover
- textarea appears flush with blackground
- textarea gets light gradient on de-focus
-  Change 'edit' to 'Add Description' when text is empty

- Added 'isBeta' configs which adds a "(BETA)" label in each section

* Add support for a logo in the NavBar

* Add a max height/width to the logo

* WIP

* Cleanup blueprint modifications

* Fix path error

* Update unit tests

* Cleanup imports

* [DPTOOLS-1803] Staging deploy

* Update

* Added travis configuration file

* Added .PHONY annotations to Makefile
Removed 'mypy' and commented 'npm run test' in travis.yml

* Added 'mypy' to Makefile

* Added a lineage section in the table details side bar. This link can be enabled and customized by overwriting the default config values.
* Cleaned up some global styles by nesting them inside their component classes.
* Removed deprecated 'nav_link' file.
* Added comments for static configs.