Replace yarn by NPM as a default Package Manager (#63)

* chore: replace yarn by NPM as a default PM

Yarn does not support script that would be useful for the lib development (such as `postinstall` and `prepublishOnly`).

.github/workflows/ci.yaml

@@ -22,10 +22,10 @@ jobs:
         uses: actions/setup-node@v2
 
       - name: Install dependencies
-        run: yarn install
+        run: npm install
 
       - name: Build
-        run: yarn lint
+        run: npm run lint
 
   build:
     runs-on: ubuntu-latest
@@ -37,10 +37,10 @@ jobs:
         uses: actions/setup-node@v2
 
       - name: Install dependencies
-        run: yarn install
+        run: npm install
 
       - name: Build
-        run: yarn build
+        run: npm run build
 
   tests:
     runs-on: ubuntu-latest
@@ -52,7 +52,7 @@ jobs:
         uses: actions/setup-node@v2
 
       - name: Install dependencies
-        run: yarn install
+        run: npm install
 
       - name: Build
-        run: yarn test
+        run: npm run test

.github/workflows/publish.yaml

@@ -18,7 +18,7 @@ jobs:
                   create_tag: "true"
                   commit_pattern: "^Release (\\S+)"
                   workspace: "."
-                  publish_command: "yarn"
+                  publish_command: "npm"
                   publish_args: "--non-interactive"
               env: # More info about the environment variables in the README
                   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Leave this as is, it's automatically generated

README.md

@@ -17,7 +17,7 @@ This project is still under development, please consider this if you are using i
 
 Run the following command:
 ```shell
-yarn add aleph-sdk-ts
+npm install aleph-sdk-ts
 ```
 
 ## Play with this repository
@@ -31,8 +31,8 @@ git clone https://github.com/aleph-im/aleph-sdk-ts
 
 - Run the tests manually:
 ```shell
-yarn install
-yarn test
+npm install
+npm run test
 ```
 
 - Or use [act](https://github.com/nektos/act):
@@ -44,7 +44,7 @@ act
 
 Just run:
 ```shell
-yarn build
+npm run build
 ```