solcjs: add page (#6628)

pages/common/solcjs.md

@@ -0,0 +1,24 @@
+# solcjs
+
+> A set of JavaScript bindings for the Solidity compiler.
+> More information: <https://github.com/ethereum/solc-js>.
+
+- Compile a specific contract to hex:
+
+`solcjs --bin {{path/to/file.sol}}`
+
+- Compile the ABI of a specific contract:
+
+`solcjs --abi {{path/to/file.sol}}`
+
+- Specify a base path to resolve imports from:
+
+`solcjs --bin --base-path {{path/to/directory}} {{path/to/file.sol}}`
+
+- Specify one or more paths to include containing external code:
+
+`solcjs --bin --include-path {{path/to/directory}} {{path/to/file.sol}}`
+
+- Optimise the generated bytecode:
+
+`solcjs --bin --optimize {{path/to/file.sol}}`