rclnodejs v1.4.1

Bug fix

• Fix example errors (#1205)
• Correct the index.js to be required for example/ (#1203)
• Fix test failure on rolling build (#1201)

Documentation

• Add README for each example (#1199)
• Add a client/service demo for typescript (#1195)
• Add a subscriber/publisher demo for typescript (#1194)
• Remove docs/ from develop branch (#1189)
• Restructure current examples (#1188)

Others

• Indicate the usage of generating messages from .idl files (#1185)
• Pump commander (#1197)
• Remove unnecessary files from npm package (#1191)