Update README.md (#28)

* Remove unavailable badge from README.md

* Add title to README.md

* Suggest using newer `codecov/codecov-action` in README.md

Author: abhro

README.md

@@ -1,6 +1,4 @@
-<p align="center">
-  <a href="https://github.com/actions/typescript-action/actions"><img alt="typescript-action status" src="https://github.com/actions/typescript-action/workflows/build-test/badge.svg"></a>
-</p>
+# `julia-actions/julia-processcoverage` Action
 
 ## Usage
 
@@ -9,9 +7,10 @@ See [PkgTemplates.jl](https://github.com/invenia/PkgTemplates.jl/blob/master/tes
 ```yaml
 
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v5
         with:
           files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
 ```
 
 One can also specify the directory or directories (comma separated) to use via the `directories` input (which defaults to `src,ext`). E.g.
@@ -20,17 +19,19 @@ One can also specify the directory or directories (comma separated) to use via t
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,ext,examples
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v5
         with:
           files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
 ```
 instructs the action to look for coverage information in `src`, `ext`, and an `examples` folder. Likewise, use
 ```yaml
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: path/to/subdir/package/src
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v5
         with:
           files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
 ```
 to get coverage information from a package in a subdirectory of the repo.