Update spectron to version 3.2.0 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

spectron just published its new version 3.2.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of spectron – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 15 commits .

• da0855d 3.2.0
• adaf7ad Mention Electron 1.2.x
• bdd9752 Merge pull request #53 from electron/electron-1-2
• a184b02 Upgrade to Electron 1.2
• d428bc9 3.1.3
• df870f7 Mention node integration tweaks
• 161c777 Merge pull request #52 from electron/require-error
• e16f09f Add section about node integration
• d1b8d89 Remove standard errors
• 90f7c8d Test custom require name with disabled node integration
• 05e1ba9 Reuse app across specs
• 257ff67 Assert properties are not set on client
• 98d4d49 Don't add commands/properties when node integration is disabled
• bd037f2 Assert helper properties are undefined
• 125c1c6 Check require for if node integration is enabled

See the full diff.

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